| DotNetKicks.com Links |
| ASP.NET MVC Tip: Dependency Injection with Unity Application Block ... In this post, I demonstrate how you can use dependency injection pattern using Microsoft's Unity Application Block (Unity). If you want to develop an ASP.NET MVC application fully with Microsoft stack, you can use Unity Application Block to perform dependency injection. | Go |
| ASP.NET MVC Tip: Dependency Injection with Unity Application Block ... In this post, I demonstrate how you can use dependency injection pattern using Microsoft's Unity Application Block (Unity). If you want to develop an ASP.NET MVC application fully with Microsoft stack, you can use Unity Application Block to perform dependency injection. | Go |
| MVP Tips from trenches Working with HttpContext (Part 2) ... This is part 2 of blog post series presenting solutions to some common problems developers are facing implementing the MVP pattern in real world applications. | Go |
| URLRewriting for the masses ... Using URLRewriter to control inbound connections to your site, and to proxy external website content for client side dynamic content. | Go |
| Amazon launches Windows.. BUT ... Amazon is offering a great service with EC2. Now that we can run Windows on it we have a solid and scalable host for startups. However, it's not really what I expected.. | Go |
| Extending NetTiers - Adding a SeperatorTemplate ... A brief tutorial on how to add a SeperatorTemplate to the item repeaters in .Nettiers and how to implement it in the codesmith templates. | Go |
| A Simple Animal CAPTCHA ... A basic animal image CAPTCHA designed to keep spammers away without making it too difficult on your users. | Go |
| Blog Service Trackback Release 0.7 ... The seventh release of BlogSvc includes support for Trackbacks. Also, this release contains the following new or improved features: Updated to latest MVC Beta, A new theme: Hibiscus, Auto-ping links upon create/update entry, Trackback client and server support, Pingback client and server support, and more. | Go |
| Using RequiredFieldValidator control with DropDownList control ... We use RequiredFieldValidator control to make a field mandatory in ASP.Net. This little tip will help us to use a DropDownList control with RequiredFieldValidator control. | Go |
| Zip Compressing ASP.NET Session and Cache State ... Scott Hanselman discusses a recent podcast with the team from StackOverflow where it was mentioned that they compress the Cache or Session data in ASP.NET, enabling them to store about 5-10x more data. | Go |
| What's hot in ASP.NET 3.5 SP1 ... Want to find out what's really hot in ASP.NET 3.5 SP1? This blog post contains a short descriptive ennumeration of important new features in ASP.NET 3.5 SP1, like for instance: Dynamic Data, URL Routing, but most importantly the new ADO.NET Entity Framework! | Go |
| ASP.NET MVC: Simplified Localization via ViewEngines ... Thanks to Brad, he identified a few areas that made things MUCH simpler from my prior implementation. Notably, while you still have your ViewEngine specify "here's your view's path" there's no longer a need for having a new helper, derived classes, etc. This implementation goes back to the simplified HtmlHelper extension in which you can use in any ViewEngine regardless. It also allows you to "replace" the implementation by just changing the namespace, just as you can do with Html and Ajax. | Go |
| ASP.Net MVC Extension method to create a Security Aware Html.ActionLin ... The following is my attempt at creating an "security aware" action link that detects if a user is authorized to click (invoke) the action. The point is to show, hide or disable a link based on the Authorize attribute of the controller. | Go |
| ScottG:October 22nd Links: ASP.NET, Visual Studio, WPF and Silverlight ... Latest quality link collection by Scott | Go |
| Delicious tagged ASP.NET Links |
| 7 of my favorite jQuery plugins for use with ASP.NET | Encosia | Go |
| A Guide to Learning ASP.NET MVC Beta 1 - Stephen Walther on ASP.NET MVC | Go |
| Brad Abrams : AjaxWorld Talk: Building a Great Ajax application from Scratch | Go |
| Essential Visual Studio Tips & Tricks that Every Developer Should Know - Stephen Walther on ASP.NET MVC | Go |
| The Weekly Source Code 35 - Zip Compressing ASP.NET Session and Cache State - Scott Hanselman | Go |
| Partial Requests in ASP.NET MVC " Steve Sanderson's blog | Go |
| ASP.NET MVC Beta Released | Go |
| ASP.NET MVC : The Official Microsoft ASP.NET Site | Go |
| Maarten Balliauw {blog} - CarTrackr - Sample ASP.NET MVC application | Go |
| CodeProject: Architecting .NET Web Applications for Scale & Performance (A Practical Guide). Free source code and programming help | Go |
| Partial Output Caching in ASP.NET MVC " Steve Sanderson's blog | Go |
| Scott Gu Blog Links |
| October 22nd Links: ASP.NET, Visual Studio, WPF and Silverlight ... Here is the latest in my link-listing series . Also check out my ASP.NET Tips, Tricks and Tutorials page and Silverlight Tutorials page for links to popular articles I've done myself in the past. ASP.NET Building a Great ASP.NET AJAX Application from Scratch : Brad Abrams has a nice end to end application tutorial that shows off building an ASP.NET AJAX application from scratch. It covers ASP.NET, LINQ, Server and Client-side AJAX, the ASP.NET AJAX Control Toolkit, jQuery and more. A great end to end read. A Guide to Learning the ASP.NET MVC Beta : Stephen Walther has a great set of links with some good videos and tutorials you can follow to learn more about the recent ASP.NET MVC beta release. ASP.NET MVC and the new IIS7 URL Rewriting Module : Scott Hanselman has a great post that shows off using the new IIS7 Rewriitng Module (which is free and very, very cool) to deliver great SEO (search engine optimization) for sites built with ASP.NET and specifically ASP.NET MVC. 7 of my Favorite jQuery plugins for use with ASP.NET : Dave Ward has a nice blog post that talks about 7 of his favorite jQuery plugins and how he uses them with ASP.NET. Using jQuery to display a modal ASP.NET UpdatePanel confirmation : Dave Ward has another nice blog post that talks about how to use jQuery with the ASP.NET AJAX UpdatePanel control. Using jQuery Load with the ASP.NET MVC Framework : Jason has a nice simple sample that demonstrates how to use jQuery to load an ASP.NET MVC view remotely and populate a page on the client. Visual Studio Essential Visual Studio Tips & Tricks that Every Developer Should Know : Stephen Walther has a fantastic article with 11 cool tips and tricks that you should make sure you know and use with Visual Studio. VS 2008 Snippet Designer : A cool utility that enables you to quickly create re-usable Visual Studio snippets. Very handy for automating common tasks. Silverlight and WPF XAML Power Toys Released for WPF and Silverlight : Karl Shifflett has released an awesome update to his XAML Power Toys download. This is a must-have download if you are doing WPF or Silverlight development, and provides a bunch of great wizards and tools that help automating application development. Very, very cool stuff. WPF Pixel Shader Effects Library on CodePlex : .NET 3.5 SP1 added Pixel Shader support to WPF - which enables you to add cool DirectX optimized visual effects to any WPF control or surface. This article from Jamie points to a nice new CodePlex project that is available that delivers a bunch of pre-built effects you can use. Silverlight 2 UI Templates : Tim Heuer writes about some cool new UI templates available for the recently released Silverlight 2. Viewing Design Time Data in VS 2008 WPF and Silverlight Designers : Karl Shifflett has another nice article that talks about some techniques you can use to see sample data in the VS 2008 WPF and Silverlight designers when building applications. Hope this helps, Scott | Go |
| ASP.NET MVC Beta Released ... Today we released a beta of the new ASP.NET MVC framework. Click here to download it. You can also visit www.asp.net/mvc to explore tutorials , quickstarts , and videos to learn more. The ASP.NET MVC Beta works with both .NET 3.5 and .NET 3.5 SP1, and supports both VS 2008 and Visual Web Developer 2008 Express SP1 (which is free - and now supports class libraries and web application project types). Today's ASP.NET MVC Beta release comes with an explicit "go-live" license that allows you to deploy it in production environments. The previous preview releases also allowed go-live deployments, but did so by not denying permission to deploy as opposed to explicitly granting it (which was a common source of confusion). Today's release is clearer about this in the license. The beta release is getting close to V1 feature complete, although there are still a few more features that will be added before the final "V1" release (including several VS tooling enhancements). The team decided to call this release a "beta", though, because the quality and testing of it is higher than the previous previews (a lot of bug fixes and performance tuning work went into it), and they feel that the core features that are in it are now "baked enough" that there won't be major changes from this release to the final product. This post contains a quick summary of some of the new features and changes in this build compared to the previous "Preview 5" release: New "Add View" Menu in Visual Studio New \Scripts directory and jQuery Support Built-in Model Binder Support for Complex Types Refactored Model Binder Infrastructure Strongly Typed UpdateModel and TryUpdateModel WhiteList Filtering Improved Unit Testing of UpdateModel and TryUpdateModel Scenarios Strongly Typed [AcceptVerbs] attribute Better Validation Error Messages HTML Helper Cleanup and Refactoring Silverlight / ASP.NET MVC Project Integration ASP.NET MVC Futures Assembly \Bin and GAC Assembly Deployment I am also planning to publish a few end to end tutorials in the weeks ahead that explain ASP.NET MVC concepts in more depth for folks who have not looked at it before, and who want a "from the beginning" set of tutorials on how to get started. New "Add View" Menu in Visual Studio With previous ASP.NET MVC preview releases you had to manually add views through the Project->Add New Item dialog in VS, and creating and wiring up everything required several manual steps (making sure the directory/file structure is right, going into the code-behind file to specify the strongly typed ViewData model type, etc). Today's beta makes the steps much easier. You can now just move your source editor cursor to be within a Controller action method in the source editor, and then right-click and select a new "Add View" context menu item (alternatively you can type the Ctrl-M Ctrl-V keyboard shortcut to invoke this without having to take your hands off the keyboard): This will bring up a new "Add View" dialog that allows you to specify the name of the view you want to create, its master page, and optionally its strongly typed ViewData "Model" type: Visual Studio will automatically pre-populate the view name based on the action method your cursor is within (you can then override this if you want). For example, if our cursor had been within an "Edit" action method when we selected "add view" it would have pre-populated the view name textbox with "Edit" instead of "Browse". The strongly typed ViewData "model" for a view can be selected from an editable ComboBox that lists all classes in (or referenced) from the MVC project: You can either select a type from the list, or manually type one in the ComboBox. You can also optionally pick an initial type from the list and then tweak it. For example, we could select the "Product" class from the list and then use the ComboBox editing support to wrap it as an IEnumerable<Product> - meaning a sequence of pr | Go |
| Silverlight 2 Released ... Today we shipped the final release of Silverlight 2. You can download Silverlight 2, as well the Visual Studio 2008 and Expression Blend 2 tool support to target it, here . Cross Platform / Cross Browser .NET Development Silverlight 2 is a cross-platform browser plugin that enables rich media experiences and .NET RIAs (Rich Internet Applications) within the browser. Silverlight 2 is small in size (4.6MB) and takes only 4-10 seconds to install on a machine that doesn't already have it. It does not require the .NET Framework to be installed on a computer to run - the Silverlight setup download includes everything necessary to play video or run applications. Developers can write Silverlight applications using any .NET language (including VB, C#, JavaScript, IronPython and IronRuby). Silverlight provides a rich set of features for development including: WPF UI Framework : Silverlight 2 includes a rich UI framework that makes building rich Web applications much easier. In includes a powerful graphics and animation engine, as well as rich support for higher-level UI capabilities like controls, layout management, data-binding, styles, and template skinning. The WPF UI Framework in Silverlight is a compatible subset of the WPF UI Framework features in the full .NET Framework, and enables developers to re-use skills, controls, code and content to build both rich cross browser web applications, as well as rich desktop Windows applications. Rich Controls : Silverlight 2 includes a rich set of built-in controls that developers and designers can use to quickly build applications. The Silverlight 2 release includes core form controls (TextBox, CheckBox, RadioButton, ComboBox, etc), built-in layout management panels (StackPanel, Grid, Panel, etc), common functionality controls (Slider, ScrollViewer, Calendar, DatePicker, etc), and data manipulation controls (DataGrid, ListBox, etc). All Silverlight controls support a rich control templating model, which enables developers and designers to collaborate together to build highly polished solutions. Rich Networking Support : Silverlight 2 includes rich networking support. It includes out of the box support for calling REST, WS*/SOAP, POX, RSS, and standard HTTP services. It supports cross domain network access (enabling Silverlight clients to directly access resources and data from resources on the web). It also includes built-in sockets networking support. Rich Base Class Library : Silverlight 2 includes a rich .NET base class library of functionality (collections, IO, generics, threading, globalization, XML, local storage, etc). It includes rich APIs that enable HTML DOM/JavaScript integration with .NET code. It includes LINQ and LINQ to XML library support (enabling easy transformation and querying of data), as well as local data caching and storage support. The .NET APIs in Silverlight are a compatible subset of the full .NET Framework. Rich Media Support : Silverlight 2 includes built-in video codecs for playing high definition video, as well as for streaming it over the web (including both live and on-demand support). Silverlight includes support for adaptively switching video bitrates on the fly based on network conditions (enabling users to avoid seeing the dreaded "buffering..." message), placing and metering ads within video streams, as well as enabling content protection. The final Silverlight 2 release delivers a tremendous amount of power and flexibility that enables you to really push the boundaries of what can be done in a browser, and enable great end user experiences. Silverlight Customers Over the last few months a number of very high profile sites have successfully launched using the beta releases of Silverlight 2. In August, NBC hosted the Olympics live on nbcolympics.com and served up 1.3 billion page views, 70 million video streams, and 600 million minutes of video content - makin | Go |
| October 10th Links: ASP.NET, ASP.NET AJAX, jQuery, IIS ... Here is the latest in my link-listing series . Also check out my ASP.NET Tips, Tricks and Tutorials page and Silverlight Tutorials page for links to popular articles I've done myself in the past. ASP.NET Best Practices for Creating ASP.NET websites with IIS 6.0 : Omar Al Zabir, author of the excellent Building a Web 2.0 Portal with ASP.NET 3.5 book , has a great article that details best practices to follow when setting up a site on IIS 6.0. Definitely worth reading and book-marking. ASP.NET Dynamic Data Videos using VB: Bill Burrows has put together an awesome series of videos that show off how to use the new ASP.NET Dynamic Data support provided in .NET 3.5 SP1. You can find more links to ASP.NET Dynamic Data tutorials in my last link post here . Exploring Caching in ASP.NET : Abhijit Jana has a nice article that discusses caching options with ASP.NET. If you are interested in another nice (but not well known) caching technique, you might also want to check out my prior Tip/Trick post on "Donut Caching" using the ASP.NET 2.0 Output Cache Substitution feature . Routing with WebForms : Wally McClure has a nice podcast that describes how to use the new ASP.NET routing infrastructure in .NET 3.5 SP1 with Web Forms based pages. A lot of people mistakenly think this feature only works with ASP.NET MVC applications - when in reality it also works with web forms pages (in fact all ASP.NET Dynamic Data sites use it). ASP.NET Continuous Integration and Deployment using CruiseControl.NET, Subversion, MSBuild and Robocopy : Omar Al Zabir has another great article - this time on implementing continuous integration with ASP.NET. ASP.NET AJAX and jQuery An Introduction to jQuery (Part 1) : Rick Strahl has posted an excellent article that introduces jQuery, and walks-through how to take advantage of it within ASP.NET pages. New AJAX Support for Data-Driven Web Apps : Bertrand Le Roy has written a great MSDN article that describes some of the new ASP.NET AJAX features available in preview form today. Also check out his blog posts here and here to learn more about how the new client-side data templating feature support. Using jQuery to enhance ASP.NET AJAX progress indication : Dave Ward has a cool article that describes how to integrate jQuery functionality with the ASP.NET AJAX UpdatePanel control to enable better progress indication status. ASP.NET AJAX: Enabling Bookmarking and the Browser's Back Button : Scott Mitchell continues his excellent series on ASP.NET AJAX and discusses how to add history points to an AJAX-enabled web page so that visitors can bookmark it, as well as to enable back/forward browser navigation. This is a new feature added to ASP.NET in .NET 3.5 SP1. 46 ASP.NET AJAX Control Toolkit Tutorials : Christian Wenz has published 46 super useful tutorials in both VB and C# that show of how to perform common scenarios with the ASP.NET AJAX Control Toolkit. Microsoft Web Platform Web Platform Installer: Make it easy to setup for web development : Scott Hanselman has a nice post that shows off the new "Microsoft Web Platform Installer" we are building that provides an easy way to quickly install every Microsoft web component out there - and quickly get a machine ready for web development. Hope this helps, Scott | Go |
| October 2nd Links: ASP.NET, ASP.NET MVC, ASP.NET Dynamic Data ... Here is the latest in my link-listing series . Also check out my ASP.NET Tips, Tricks and Tutorials page and Silverlight Tutorials page for links to popular articles I've done myself in the past. ASP.NET Amazon EC2 Support for Windows and ASP.NET: Big news announced this week: Amazon will be offering Windows Server 2008 as an option in their EC2 service. This enables you to use ASP.NET, IIS7 and SQL Server in the cloud. Using ASP.NET WebForms, MVC and Dynamic Data in a Single Application : Scott Hanselman has a nice post that demonstrates how you can have a single ASP.NET application that uses ASP.NET WebForms, MVC, WebServices and Dynamic Data. You have the flexibility to mix and match them however you want, which allows you to always use the right tool depending on the specific job. Modifying Data with the ListView's EditItemTemplate : Matt Berseth has a great post that talks about how to use the ASP.NET 3.5 ListView control to enable in-place editing scenarios - with total html markup control. 4 New Grouping Grid Skins: Vista, Bold, Win2k3 and Soft : Matt Berseth has another nice post that demonstrates how to skin the ASP.NET ListView control to enable some sweet data grouping scenarios. Unlocking and Approving User Accounts : Scott Mitchell posts another in his great series of articles on ASP.NET security (click here for all the articles in the series). This article talks about how you can setup administration pages that allow admins to lock out and approve user accounts using the ASP.NET Membership system. Adding OpenID to you website in conjunction to ASP.NET Membership : Dan Hounshell has a nice article that discusses how to add OpenID authentication support to your web-site, and use it in conjunction to ASP.NET's built-in membership system. ASP.NET MVC MVC Membership with Preview 5 : Troy Goode posts an update of his popular MVC Membership template that works with ASP.NET MVC Preview 5. It provides a set of administration pages you can use for user/role management, as well as adds support for OpenID and Windows LiveID. MVC Flickr Xplorer : Mehfuz Hossain has a cool ASP.NET MVC sample application posted that enables a nice picture explorer for FlickR photos. ASP.NET Dynamic Data Simple 5 Table Northwind Example : Matt Berseth kicks off his ASP.NET Dynamic Data tutorial series with a nice post that shows how to build a simple 5 table application using ASP.NET Dynamic Data with .NET 3.5 SP1. Dynamic Data And Custom Metadata Providers : Matt continues the series and covers the MetadataType attribute, and how you can use it to annotate your entities with additional metadata. Dynamic Menu for your Dynamic Data: Matt continues and covers how to add a data-driven menu to the site. Customizing the Delete Confirmation Dialog : Matt continues and demonstrates how to build a nice UI experience when deleting records in a dynamic data application. Experimenting with YUI's DataTable and DataSource Controls : Matt experiments with how to use client-side AJAX components together with dynamic data. Hope this helps, Scott | Go |
| jQuery and Microsoft ... jQuery is a lightweight open source JavaScript library (only 15kb in size) that in a relatively short span of time has become one of the most popular libraries on the web. A big part of the appeal of jQuery is that it allows you to elegantly (and efficiently) find and manipulate HTML elements with minimum lines of code. jQuery supports this via a nice "selector" API that allows developers to query for HTML elements, and then apply "commands" to them. One of the characteristics of jQuery commands is that they can be "chained" together - so that the result of one command can feed into another. jQuery also includes a built-in set of animation APIs that can be used as commands. The combination allows you to do some really cool things with only a few keystrokes. For example, the below JavaScript uses jQuery to find all <div> elements within a page that have a CSS class of "product", and then animate them to slowly disappear: As another example, the JavaScript below uses jQuery to find a specific <table> on the page with an id of "datagrid1", then retrieves every other <tr> row within the datagrid, and sets those <tr> elements to have a CSS class of "even" - which could be used to alternate the background color of each row: [Note: both of these samples were adapted from code snippets in the excellent jQuery in Action book] Providing the ability to perform selection and animation operations like above is something that a lot of developers have asked us to add to ASP.NET AJAX, and this support was something we listed as a proposed feature in the ASP.NET AJAX Roadmap we published a few months ago. As the team started to investigate building it, though, they quickly realized that the jQuery support for these scenarios is already excellent, and that there is a huge ecosystem and community built up around it already. The jQuery library also works well on the same page with ASP.NET AJAX and the ASP.NET AJAX Control Toolkit. Rather than duplicate functionality, we thought, wouldn't it be great to just use jQuery as-is, and add it as a standard, supported, library in VS/ASP.NET, and then focus our energy building new features that took advantage of it? We sent mail the jQuery team to gauge their interest in this, and quickly heard back that they thought that it sounded like an interesting idea too. Supporting jQuery I'm excited today to announce that Microsoft will be shipping jQuery with Visual Studio going forward. We will distribute the jQuery JavaScript library as-is, and will not be forking or changing the source from the main jQuery branch. The files will continue to use and ship under the existing jQuery MIT license. We will also distribute intellisense-annotated versions that provide great Visual Studio intellisense and help-integration at design-time. For example: and with a chained command: The jQuery intellisense annotation support will be available as a free web-download in a few weeks (and will work great with VS 2008 SP1 and the free Visual Web Developer 2008 Express SP1). The new ASP.NET MVC download will also distribute it, and add the jQuery library by default to all new projects. We will also extend Microsoft product support to jQuery beginning later this year, which will enable developers and enterprises to call and open jQuery support cases 24x7 with Microsoft PSS. Going forward we'll use jQuery as one of the libraries used to implement higher-level controls in the ASP.NET AJAX Control Toolkit, as well as to implement new Ajax server-side helper methods for ASP.NET MVC. New features we add to ASP.NET AJAX (like the new client template support ) will be designed to integrate nicely with jQuery as well. We also plan to contribute tests, bug fixes, and patches back to the jQuery open source project. These will all go through the standard jQuery patch review process. Summary We are really excited to be able to partner w | Go |
| Silverlight 2 Release Candidate Now Available ... This evening we published the first public release candidate of Silverlight 2. There are still a small handful of bugs fixes that we plan to make before we finally ship. We are releasing today's build, though, so that developers can start to update their existing Silverlight Beta2 applications so that they'll work the day the final release ships, as well as to enable developers to report any last minute showstopper issues that we haven't found internally (please report any of these on the www.silverlight.net forums). Important: We are releasing only the Silverlight Developer Runtime edition (as well as the VS and Blend tools to support it) today, and are not releasing the regular end-user edition of Silverlight. This is because we want to give existing developers a short amount of time to update their applications to work with the final Silverlight 2 APIs before sites are allowed to go live with it. There are some breaking changes between Beta2 and this RC, and we want to make sure that existing sites can update to the final release quickly once the final release is out. As such, you can only use the RC for development right now - you can't go live with the new APIs until the final release is shipped (which will be soon though). You can download today's Silverlight Release Candidate and accompanying VS and Blend support for it here . Note that Expression Blend support for Silverlight 2 is now provided using Blend 2.0 SP1. You will need to install Blend 2.0 before applying the SP1 service pack that adds Silverlight 2 support. If you don't already have Blend 2.0 installed you can download a free trial of it here . Beta2->RC API Updates Today's release candidate includes a ton of bug fix and some significant performance optimization work. Today's release candidate also includes a number of final API tweaks designed to fix differences between Silverlight and the full .NET Framework. Most of these changes are relatively small (order of parameters, renames of methods/properties, movement of types across namespaces, etc) although there are a number of them. You can read this blog post and download this document to get a listing of the known API breaking changes made from the Beta2 release. We have updated the styles of the controls shipped with Silverlight, and have also modified some of the state groups and control template names they use. When upgrading from Beta2 you might find it useful to temporarily remove any custom style templates you've defined, and get your application functionality working using the RC first - and then after that works add back in the styles one style definition at a time to catch any rename/behavior change issues with them. If you find yourself stuck with an question/issue moving from Beta2 to the RC, please report it on the www.silverlight.net forums (Silverlight team members will be on there helping folks). If after a day or two you aren't getting an answer please send me email (scottgu@microsoft.com ) and I can help or connect you with someone who knows the answer. New Controls Today's release candidate includes a bunch of feature additions and tweaks across Silverlight 2, as well as in the VS and Blend tools targeting it. In general you'll find a number of nice improvements across the controls, networking, data caching, layout, rendering, media stack, and other components and sub-systems. Over the next few months we will be releasing a lot of new Silverlight 2 controls (more details on these soon). Today's release candidate includes three new core controls - ComboBox, ProgressBar, and PasswordBox - that we are adding directly to the core Silverlight runtime download (which is still only 4.6MB in size, and only takes a few seconds to install): At runtime these controls by default look like: The ComboBox in Silverlight 2 supports standard DropDownList semantics. In addition to statically defining items like above, you | Go |
| ASP.NET MVC Preview 5 and Form Posting Scenarios ... This past Thursday the ASP.NET MVC feature team published a new "Preview 5" release of the ASP.NET MVC framework. You can download the new release here . This "Preview 5" release works with both .NET 3.5 and the recently released .NET 3.5 SP1. It can also now be used with both Visual Studio 2008 as well as (the free) Visual Web Developer 2008 Express SP1 edition (which now supports both class library and web application projects). Preview 5 includes a bunch of new features and refinements (these build on the additions in "Preview 4" ). You can read detailed "Preview 5" release notes that cover changes/additions here . In this blog post I'm going to cover one of the biggest areas of focus with this release: form posting scenarios. You can download a completed version of the application I'll build below here . Basic Form Post with a Web MVC Pattern Let's look at a simple form post scenario - adding a new product to a products database: The page above is returned when a user navigates to the "/Products/Create" URL in our application. The HTML form markup for this page looks like below: The markup above is standard HTML. We have two <input type="text"/> textboxes within a <form> element. We then have an HTML submit button at the bottom of the form. When pressed it will cause the form it is nested within to post the form inputs to the server. The form will post the contents to the URL indicated by its "action" attribute - in this case "/Products/Save". Using the previous "Preview 4" release of ASP.NET we might have implemented the above scenario using a ProductsController class like below that implements two action methods - "Create" and "Save": The "Create" action method above is responsible for returning an html view that displays our initial empty form. The "Save" action method then handles the scenario when the form is posted back to the server. The ASP.NET MVC framework automatically maps the "ProductName" and "UnitPrice" form post values to the method parameters on the Save method with the same names. The Save action then uses LINQ to SQL to create a new Product object, assigns its ProductName and UnitPrice values with the values posted by the end-user, and then attempts to save the new product in the database. If the product is successfully saved, the user is redirected to a "/ProductsAdded" URL that will display a success message. If there is an error we redisplay our "Create" html view again so that the user can fix the issue and retry. We could then implement a "Create" HTML view template like below that would work with the above ProductsController to generate the appropriate HTML. Note below that we are using the Html.TextBox helper methods to generate the <input type="text"/> elements for us (and automatically populate their value from the appropriate property in our Product model object that we passed to the view): Form Post Improvements with Preview 5 The above code works with the previous "Preview 4" release, and continues to work fine with "Preview 5". The "Preview 5" release, though, adds several additional features that will allow us to make this scenario even better. These new features include: The ability to publish a single action URL and dispatch it differently depending on the HTTP Verb Model Binders that allow rich parameter objects to be constructed from form input values and passed to action methods Helper methods that enable incoming form input values to be mapped to existing model object instances within action methods Improved support for handling input and validation errors (for example: automatically highlighting bad fields and preserving end-user entered form values when the form is redisplayed to the user) I'll use the remainder of this blog post to drill into each of these scenarios. [AcceptVerbs] and [ActionName] attributes In our sample above we implemented ou | Go |
| Quick Update ... I've received a number of (very nice) emails recently asking if I was ok - since my blog has been silent the last few weeks (and much of the summer). Just to address people's concerns - I'm alive and well. :-) I've just been on vacation the last 6 weeks, and have unfortunately not had free time to post (I've been changing a lot of diapers). I am still on vacation another week before I officially return to work. I did get a chance to write up a quick post this weekend that covers some of the new ASP.NET MVC Preview 5 features, though, that will hopefully provide some interim reading until I can resume a more regular posting schedule over the next month when I get back into the office. Thanks, Scott P.S. Somewhat to my embarrassment I started a Part1/Part2 post on "Preview 4" right before I left for vacation, and didn't have time to finish part 2 before "Preview 5" came out. I am going to post this lost segment (which covered AJAX) later this month and write it against the latest preview build. P.P.S. People often ask me whether I write my own blog. Yep - I actually really do write every single post. Hopefully my absence the last 6 weeks provides some evidence to support this. :-) | Go |
| ASP.NET MVC Preview 4 Release (Part 1) ... The ASP.NET MVC team is in the final stages of finishing up a new "Preview 4" release that they hope to ship later this week. The Preview 3 release focused on finishing up a lot of the underlying core APIs and extensibility points in ASP.NET MVC. Starting with Preview 4 this week you'll start to see more and more higher level features begin to appear that build on top of the core foundation and add nice productivity. There are a bunch of new features and capabilities in this new build - so much in fact that I decided I needed two posts to cover them all. This first post will cover the new Caching, Error Handling and Security features in Preview 4, as well as some testing improvements it brings. My next post will cover the new AJAX features being added with this release as well. Understanding Filter Interceptors Action Filter Attributes are a useful extensibility capability in ASP.NET MVC that was first added with the "Preview 2" release. These enable you to inject code interceptors into the request of a MVC controller that can execute before and after a Controller or its Action methods execute. This enables some nice encapsulation scenarios where you can easily package-up and re-use functionality in a clean declarative way. Below is an example of a super simple "ScottGuLog" filter that I could use to log details about exceptions raised during the execution of a request. Implementing a custom filter class is easy - just subclass the "ActionFilterAttribute" type and override the appropriate methods to run code before or after an Action method on the Controller is invoked, and/or before or after an ActionResult is processed into a response. Using a filter within a ASP.NET MVC Controller is easy - just declare it as an attribute on an Action method, or alternatively on the Controller class itself (in which case it will apply to all Action methods within the Controller): Above you can see an example of two filters being applied. I've indicated that I want my "ScottGuLog" to be applied to the "About" action method, and that I want the "HandleError" filter to be applied to all Action methods on the HomeController. Previous preview releases of ASP.NET MVC enabled this filter extensibility, but didn't ship with pre-built filters. ASP.NET Preview 4 now includes several useful filters for handling output caching, error handling and security scenarios. OutputCache Filter The [OutputCache] filter provides an easy way to integrate ASP.NET MVC with the output caching features of ASP.NET (with ASP.NET MVC Preview 3 you had to write code to achieve this). To try this out, modify the "Message" value set within the "Index" action method of the HomeController (created by the VS ASP.NET MVC project template) to display the current time: When you run your application you'll see that a timestamp updates each time you refresh the page: We can enable output caching for this URL by adding the [OutputCache] attribute to the our Action method. We'll configure it to cache the response for a 10 second duration using the declaration below: Now when you hit refresh on the page you'll see that the timestamp only updates every 10 seconds. This is because the action method is only being called once every 10 seconds - all requests between those time intervals are served out of the ASP.NET output cache (meaning no code needs to run - which makes it super fast). In addition to supporting time duration, the OutputCache attribute also supports the standard ASP.NET output cache vary options (vary by params, headers, content encoding, and custom logic). For example, the sample below would save different cached versions of the page depending on the value of an optional "PageIndex" QueryString parameter, and automatically render the correct version depending on the incoming URL's querystring value: You can also integrate with the ASP.NET Database Cache Invalidation feature - which allows you t | Go |
| Silverlight 2 Beta2 Released ... Silverlight 2 Beta2 was released today. You can download both Silverlight 2 Beta2 and the Visual Studio and Expression Blend tools support to target it here . Beta2 adds a lot of new features (more details below), but is still a 4.6 MB download that takes less than 10 seconds to install on a machine. It does not require the .NET Framework or any other software to be installed for it to work, and all features work cross-browser on both Mac and Windows machines. These features will also be supported on Linux via the Moonlight 2 release. Silverlight 2 Beta2 supports a go-live license that allows you to start using and deploying Silverlight 2 for commercial applications. There will be some API changes between Beta2 and the final release, so you should expect that applications you write with Beta2 will need to make some updates when the final release comes out. But we think that these changes will be straight-forward and relatively easy, and that you can begin planning and starting commercial projects now. You can build Silverlight Beta2 applications using the VS 2008 Tools for Silverlight and Expression Blend 2.5 June Preview downloads. You can download both of them here . The VS 2008 Tools for Silverlight download works with both VS 2008 and the recent VS 2008 SP1 beta release. UI and Control Improvements Silverlight 2 Beta2 includes a bunch of work in the UI and Control space: More Built-in Controls In Beta 1 only a few controls were included with the core Silverlight setup. Most common controls (including Button, ListBox, Slider, etc) were shipped within separate assemblies that you had to bundle with your applications (which increased the app download size). Beta 2 now installs 30+ of the most common controls as part of the core Silverlight 2 download. This means that you can now build Silverlight 2 applications that use core controls that are as small as 3kb in size - making Silverlight application downloads small and startup time fast. In addition to the core controls included with the base Silverlight 2 setup, we are also this week shipping additional higher-level controls that are implemented in separate assemblies that you can then reference and include with your applications. This includes controls like DataGrid (more details on its new Beta2 features below), Calendar (now with multi-day selection and blackout date support in Beta2), and a TabPanel control (new in Beta2). We ultimately expect to ship over a 100 controls for Silverlight. Control Template Editing Support One of the most powerful features of the WPF and Silverlight programming model is the ability to completely customize the look and feel of controls. This allows developers and designers to sculpt the UI of controls in both subtle and dramatic ways, and enables a tremendous amount of flexibility. I covered these concepts a little in my previous Silverlight Control Templating blog post here . This week's Expression Blend 2.5 June Preview now adds designer support for editing control templates - which makes it easy for you to quickly change the look of any control without having to drop-down to XAML source to-do it. To see control template editing in action, just drag/drop two Slider controls onto the Expression Blend design surface: We might decide that the slider head in the default Slider control template is too large and wide for our application. To use control template editing to change it, we can right-click on one of the sliders in the designer and select the "Edit Control Parts" context menu item. We can choose to create a new empty control template for our slider (and start from scratch), or alternatively edit a copy of the built-in control template (and start from that and tweak it): After we choose to edit a copy of the existing control template, Blend will prompt us to create and name a re-usable style resource that we'll define our control template wit | Go |
| ASP.NET MVC Support with Visual Web Developer 2008 Express ... Last week I blogged about the ASP.NET MVC Preview 3 release . One important thing I forgot to mention about this release is that you can now use it with both Visual Studio 2008 as well as the free Visual Web Developer 2008 Express edition. The SP1 release of Visual Web Developer 2008 Express adds support for both class library projects as well as web application projects (previously only web site projects could be used with it). This new support is useful in itself, as well as in enabling both ASP.NET MVC and Silverlight project support with VWD Express. If you install the Visual Web Developer Express SP1 Beta you can start using ASP.NET MVC Preview 3 with it immediately. Important: ASP.NET MVC Preview 3 does not require SP1 to be installed if you are using Visual Studio 2008. ASP.NET MVC Preview 3 will work with both VS 2008 and VS 2008 SP1 just fine. You can learn more about the new VWD Express support for ASP.NET MVC from the VS Web Tools team blog here . This post also includes a free web download that provides ASP.NET MVC Test project support for NUnit-based unit tests. You can use these NUnit project templates with both Visual Studio 2008 as well as with Visual Web Developer Express 2008. Hope this helps, Scott | Go |
| ASP.NET MVC Preview 3 Release ... This morning we released the Preview 3 build of the ASP.NET MVC framework. I blogged details last month about an interim source release we did that included many of the changes with this Preview 3 release. Today's build includes some additional features not in last month's drop, some nice enhancements/refinements, as well as Visual Studio tool integration and documentation. You can download an integrated ASP.NET MVC Preview 3 setup package here . You can also optionally download the ASP.NET MVC Preview 3 framework source code and framework unit tests here . Controller Action Method Changes ASP.NET MVC Preview 3 includes the MVC Controller changes we first discussed and previewed with the April MVC source release , along with some additional tweaks and adjustments. You can continue to write controller action methods that return void and encapsulate all of their logic within the action method. For example: which would render the below HTML when run: Preview 3 also now supports using an approach where you return an "ActionResult" object that indicates the result of the action method, and enables deferred execution of it. This allows much easier unit testing of actions (without requiring the need to mock anything). It also enables much cleaner composition and overall execution control flow. For example, we could use LINQ to SQL within our Browse action method to retrieve a sequence of Product objects from our database and indicate that we want to render a View of them. The code below will cause three pieces of "ViewData" to be passed to the view - "Title" and "CategoryName" string values, and a strongly typed sequence of products (passed as the ViewData.Model object): One advantage of using the above ActionResult approach is that it makes unit testing Controller actions really easy (no mocking required). Below is a unit test that verifies the behavior of our Browse action method above: We can then author a "Browse" ViewPage within the \Views\Products sub-directory to render a response using the ViewData populated by our Browse action: When we hit the /Products/Browse/Beverages URL we'll then get an HTML response like below (with the three usages of ViewData circled in red): Note that in addition to support a "ViewResult" response (for indicating that a View should be rendered), ASP.NET MVC Preview 3 also adds support for returning "JsonResult" (for AJAX JSON serialization scenarios), "ContentResult" (for streaming content without a View), as well as HttpRedirect and RedirectToAction/Route results. The overall ActionResult approach is extensible (allowing you to create your own result types), and overtime you'll see us add several more built-in result types. Improved HTML Helper Methods The HTML helper methods have been updated with ASP.NET MVC Preview 3. In addition to a bunch of bug fixes, they also include a number of nice usability improvements. Automatic Value Lookup With previous preview releases you needed to always explicitly pass in the value to render when calling the Html helpers. For example: to include a value within a <input type="text" value="some value"/> element you would write: The above code continues to work - although now you can also just write: The HTML helpers will now by default check both the ViewData dictionary and any Model object passed to the view for a ProductName key or property value to use. SelectList and MultiSelectList ViewModels New SelectList and MultiSelectList View-Model classes are now included that provide a cleaner way to populate HTML dropdowns and multi-select listboxes (and manage things like current selection, etc). One approach that can make form scenarios cleaner is to instantiate and setup these View-Model objects in a controller action, and then pass them in the ViewData dictionary to the View to format/render. For example, below I'm creating a SelectList view-model class over the | Go |
| May 20th Links: ASP.NET, ASP.NET AJAX, .NET, Visual Studio, Silverlight, WPF ... Apologies for the sparseness of my posting the last few weeks - work and life have been busy here lately. Below is a new post in my link-listing series to help kick things up a little. Also check out my ASP.NET Tips, Tricks and Tutorials page and Silverlight Tutorials page for links to popular articles I've done myself in the past. ASP.NET Bulk Inserting Data with the ListView Control : Matt Berseth continues his awesome posts with one that shows how to handle bulk-editing of data using the ASP.NET ListView control in .NET 3.5. Master-Detail with the GridView, DetailsView, and ModalPopup Controls : Another great post from Matt that describes how to cleanly handle a common data entry scenario. Creating Great Thumbnail Images in ASP.NET : A really nice blog post by a different Matt that details an approach that generates high quality (and small) thumbnail images. Warning the User when Caps-Lock is on : Scott Mitchell has a nice article that describes how to automatically detect and warn users in login pages when the caps-lock button is on. ASP.NET Perf Issue: Large numbers of application-restarts due to virus scanners : Tess Ferrandez has a great post that details a debug session to determine why an ASP.NET application was restarting frequently (causing performance slowdowns). The issue was a virus scanner that was causing files to be constantly updated. Make sure to check out the logging code you can add to your application to identify restart causes like this. ASP.NET AJAX ASP.NET AJAX Progress Bar Control : Matt Berseth has another great article that describes his new ASP.NET AJAX Progress Bar control. Faster Page Loading By Combining Multiple JavaScript files in Batch : Omar Al Zabir (founder of PageFlakes.com and author of the great Building a Web 2.0 Portal with ASP.NET 3.5 book) has a good article that describes the performance benefit of merging multiple JavaScript file downloads. Note that .NET 3.5 SP1 will include a new script combiner feature that helps make doing this even easier. Create ASP.NET AJAX Server Controls using the ScriptControl base class : Chris Pietschmann has a nice article that talks about how to build new ASP.NET AJAX server controls by deriving from the built-in ScriptControl base class. Inline Edit Box and Postback Ritalin Beta : Dave Ward and Mike Davis have created a new CodePlex project for their popular Inline Edit Box and PostBack Ritalin ASP.NET AJAX controls. .NET 7 Ways to Simplify your code with LINQ : Igor Ostrovsky has a great blog post that talks about new code techniques you can use to improve your code using .NET 3.5 and the new language and LINQ features in it. Visual LINQ Query Builder for LINQ to SQL : Mitsu Furuta has created a cool Visual Studio designer that allows you to graphically construct LINQ to SQL queries. Also make sure to download download the latest LINQPad utility - which is invaluable for learning LINQ and trying out LINQ queries. DataContracts without Attributes (POCO support): Aaron Skonnard has a good post that talks about a nice usability change with .NET 3.5 SP1 that allows you to serialize POCO (plain old objects) using the WCF serializers. Ukadc.Diagnostics : Josh Twist pointed me at a new CodePlex project he is working on that extends the System.Diagnostics features in .NET to include richer logging features (SQL trace support, email support, etc). Visual Studio 11 More VS Short Cuts you Should Know : A great post that talks about a bunch of useful shortcuts to print out and remember when using Visual Studio. Did you know you can show extension methods in the object browser?: Sara Ford continues her excellent "Did you know" series. I confess I didn't know this one. Silverlight 50 New Silverlight 2 Beta 1 Screencasts: Mike Taulty and Mike Ormond have put together 50 nice tutorial screen-casts that cover Silverlight 2 - all in their "spare time". Wow. AutoComplete for Silverlight TextBoxes : Nikhil Kothari has a | Go |
| ASP.net.com Community Links |
| Animated Popup Master/Detail using GridView, DetailsView and JQuery with jqModal & UpdatePanel ... Demonstrate how to build master/details data presentation using GridView, DetailsView as animated pop-up using jQuery jqModal and ASP.NET AJAX UpdatePanel.
Also who how to color animate updated row on GridView after confirming update on DetailsView using jQuery. Live Demo Provided. | Go |
| Unraveling the Mysterious of the ValidationGroup Control ... ASP.NET validation works in mysterious ways especially when you want to validate a group of controls on the page. In this article we are going to dig deep into the ValidationGroup property and see how to validate a group of controls. | Go |
| New AJAX Support For Data-Driven Web Apps ... This article shows three iterations of a page written with classic postback, then with UpdatePanel, and then with pure AJAX to illustrate how techniques employed on the server can sometimes perform better on the client. | Go |
| Creating a Custom Validation Control in ASP.NET ... The BaseValidator class defines the basic implementation needed for all Validation controls. There are 6 very useful Validation Controls included in the ASP.NET framework, however they come with a few shortcomings. In this article, we will explore how to create a custom validation control in ASP.NET and provide both Server and Client Side Validation for the same. | Go |
| Building Sharepoint List Style GridView with Ajax Control Toolkit ... In this article, we will implement a sharepoint list style GridView with the help of DropDownExtender control in Ajax Control Toolkit. | Go |
| Data Access Component - Deleting Data in C# and AJAX ... This tutorial will show you how to use C# and AJAX to create a Data Access Component that will display data from a SQL database and also allow you to delete records from the database. | Go |
| Using JavaScript and UpdatePanels in VB.NET ... We all know that AJAX utilizes JavaScript, but what if we want to use our own JavaScript calls in conjunction with AJAX? This tutorial will show you how we can call JavaScript ourselves whilst using AJAX. We will be making use of the Alert method in JavaScript when the user clicks a button. | Go |
| Web Voting System using AJAX, XML and LINQ in VB.NET ... This tutorial will teach you how to develop a poll system that will allow any user to cast their vote for the poll, and also view the results. | Go |
| ASP.NET Client Side State Management - Control State ... The article explains what is the control state and how to use it as a part of the ASP.NET client side state management. | Go |
| Building on demand Master/Detail grouping Grid with GridView and ASP.NET AJAX toolkit CollapsiblePanelExtender ... Building on demand Master\Details data with GridView, CollapsiblePanelExtender and ASP.NET AJAX PageMethods | Go |
| CodeProject.com ASP Links |
| ReSharper 4: High Gear .NET Development ... ReSharper is undoubtedly the most intelligent add-in to Microsoft Visual Studio. It comes equipped with a rich set of features that greatly increase the productivity of C# and Visual Basic.NET developers. With ReSharper, you get in-depth code analysis, intelligent coding assistance, on-the-fly error | Go |
| Generic sorting of customer objects for ObjectDataSource (ASP.NET) ... Generic sorting of customer objects for ObjectDataSource in ASP.NET. | Go |
| Client side validation using Validation Application blocks ... Client side validation using Validation Application blocks | Go |
| Architecting .NET Web Applications for Scale & Performance (A Practical Guide) ... A practical guide for NET architects, managers and developers for Scaling, Architecting, Managing and Performance optimising .NET Web applications. | Go |
| Online Code Editor ... With Online Code Editor, you can edit your code online. | Go |
| A Simple Smart Solution for Silverlight Versioning Conflicts ... A solution for Silverlight versioning conflicts | Go |
| MSAgent Style Critters for your Web Pages ... MSAgent Style Critters for your Web Pages | Go |
| Project Management FAQ ... Project Management FAQ | Go |
| Synchronous Javascript call using Scriptable XML webservice (SJAX) ... Call ASP.net AJAX Webservice Synchronously from client to use in custom validator | Go |
| Invoke .Net Assembly using SSIS:Email Framework ... This article demonstrate use of SSIS package that helps in invoking .Net Assembly having email component in it. | Go |
| Barcodes in ASP.NET applications ... Easy and cheap barcodes in ASP.NET. | Go |
| Navigational Workflows Unleashed In WWF/ASP.NET 3.5 ... Case-study on the internals of a Navigational Workflow engine for a fictional dating website called “World Wide Dating.” | Go |
| Tree Relationship Calculator ... The Tree Relationship Calculator is an object that accepts an XML representation of a tree and will calculate the relationship of any two members within it. This article describes how relationships are calculated, and what terms like second cousin, or first cousin once removed, mean. | Go |
| A Basic ASP.NET Pager Control ... A basic ASP.NET Pager User Control | Go |
| DotNetSlackers.com Links |
| Escaping ASP.NET Tags in Code Smith Templates ... I love to generate code, I have code templates for Code Smith that are the equivalent of a mold for a machine shop. I use them to create thousands upon thousands of lines of code each week, so I guard them with my life and update them almost as often...(read more)... Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here . | Go |
| FIX: The return type or the out argument of an ASMX service method that includes a property that has an internal setter may not be serialized on a computer that has the .NET Framework installed ... 952883 ... FIX: The return type or the out argument of an ASMX service method that includes a property that has an internal setter may not be serialized on a computer that has the .NET Framework installedThis RSS feed provided by kbAlerz.com.Visit kbAlertz.com to
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from the Microsoft Knowledge Base.... Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here . | Go |
| Generic sorting of customer objects for ObjectDataSource (ASP.NET) ... Generic sorting of customer objects for ObjectDataSource (ASP.NET)... Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here . | Go |
| Model Binding To A List ... Using the DefaultModelBinder in ASP.NET MVC Beta, you can bind submitted form values to arguments of an action method. But what if that argument is a list? Can you bind a posted form to an IList<T>? Sure thing! Its really easy if youre posting a bunch of simple types. For example, suppose you have the following action method. public ActionResult UpdateInts(IList<int> ints) {
return View(ints);
}
You can bind to that by simply submitting a bunch of form fields which each... Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here . | Go |
| jQuery Animation ASP.NET Control ... If you like jQuery and are interested in adding rich interaction to your asp.net apps then you should check out RIAnimation. It is a completely free animation framework for ASP.NET that has everything from robust JavaScript builder utilities to a simple extender control for animating any control without writing a single line of code. It really saves a ton of time and gives you the power of managing your User Experience on the server side. Check it out: RIAnimation - jQuery ASP.NET Animatio... Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here . | Go |
| Using Regular Expression TextBox ... I've already blogged about the new RadInputManager control in the Beta of Q3 2008 for RadControls ASP.NET AJAX .
One of the other very useful features that you can now take advantage of in the RadInputManager is its RegExpTextBox setting. Regular expressions are a good way to validate text fields such as names, addresses, phone numbers, and other user information. You can use it to constrain input, apply formatting rules, and check lengths.
If you capture input by using TextBox controls, you can use the RegExpTextBoxSetting settings to validate that input - for example to restrict the range of valid characters, to strip unwanted characters, and to perform length and format checks. You can constrain the input format by defining patterns that the input must match.
To validate a TextBox control's input using a RegExpTextBoxSetting
1. Add a RadInputManager control to your page.
If you click the "Configure Input Manager " link it will bring up the following dialog:
2 . Select what type of setting you will be adding
3. Select "Telerik.Web.UI.RegExpTextBoxSetting " and indicate which TextBox controls will be extended.
4. Select the ValidationExpression property and choose an appropriate regular expression. Set the ErrorMessage property to define the message to display if the validation fails.
5. Press "OK" and start the application.
DemoRadInputManager4ASPNETAJAX
Summary
Input validation can become a security issue if an attacker discovers that you have made unfounded assumptions. The attacker can then supply carefully crafted input that compromises your application by attempting SQL injection, cross-site scripting, and other injection attacks. To avoid such vulnerability, you should validate text fields (such as names, addresses, tax identification numbers, and so on) and use a RadInputManager to do that. The RadInputManager architecture makes it really easy to encapsulate UI functionality and behavior.
For more information, see the regular expression tutorial at http://www.regular-expressions.info/tutorial.html .
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Peshev
Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here . | Go |
| Graffiti History Widget ... Graffiti CMS doesn't ship with an archive/history widget to display the number of posts published by month, as is common in many other blog engines. I've been looking for such a widget for several months and Keyvan pointed me to one a few days ago that I got up and running in just a few moments today. You'll find it linked from this forum thread , which I'm quoting the relevant post below to make things easier for you: Okay, here is the binary . Here is a VS2008 Solution . And here are the view and layout files that I used. Again, I based this on Jon Sagara's original Archive Widget. Jon included several Plug-ins for cache invalidation. Honestly I did not look into these at all, everything seems to be functioning the way I wanted for now. As this was my first Widget, and I based it on "borrowed" code, converted to VB, I'm sure there are some things that may not be best practice. Feel free to critique, you won't hurt my feelings. Basic setup is to drop the dll in your bin folder, go into Widget section of the control panel and add it to a sidebar, choose the number of months you want displayed and your "Older Items" link text. Then create two uncategorized posts, one called "archive", one called "olderitems". Tweak the layout and view files I included above and you should be in business. Thanks- Greg Got it up and running in really about 5 minutes - very nice, and a great example of how easy it is to extend Graffiti. Thanks Greg! Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here . | Go |
| A quick, but not so dirty Image Editor using the public RadEditor ImageEditing API ... The ImageEditor dialog in RadEditor has been around for about half a year, providing much wanted common image editing capabilities to the editor's end users.
This dialog in fact is the front-end of a basic image editing engine that has been built into the Telerik.Web.UI.dll. Some time ago our colleague Todd Anglin suggested that we make the API public so it can be used independent of the editor. Sounded like a good idea - and the coming Q3 2008 will allow you to take advantage of it :)
And since the functionality is already available in the already released RadControls Futures (which acts as a public beta for the Q3), we have assembled a small, but elegant looking example (thanks to the styling capabilities of RadFormDecorator ) that features a basic image editor, being used independently of RadEditor itself.
Here is a how the editor looks like:
The attached project will show you how to:
Create thumbnails
Use the following image editing options:
Opacity
Resize
Flip
Rotate
Crop
Preview the changes
Overwrite the original image
The sample project, featuring Telerik RadControls Futures Q3 2008 Trial can be downloaded here
Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here . | Go |
| Talking about ASP.NET MVC in Apulia ... Another weekend, another community event: last Friday/Saturday I was at the Italian MVP OpenDays in Milano and next Friday (October 24th) Ill be talking in front of more than 70 person (the event is sold out) at the ASP.NET 3.5 and beyond Web Development workshop organized by DotNetSide, the .NET usergroup of South Italy. Ill speak for 3 hours (and probably more) about ASP.NET MVC and the new features that the .NET 3.5 SP1 brings to the table. There will be 2 sessions: Life after SP1: Ill talk... Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here . | Go |
| Synchronous Javascript call using Scriptable XML webservice (SJAX) ... Call ASP.net AJAX Webservice Synchronously from client to use in custom validator... Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here . | Go |
| Barcodes in asp.net application ... How to implement an easy and cheap barcodes into asp.net... Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here . | Go |
| Examining ASP.NET 2.0`s Membership, Roles, and Profile - Part 13 ... ASP.NET's forms-based authentication system in tandem with the Membership API and Login Web controls make it a cinch to create a user store, create
user accounts, and allow visitors to log into the site. What's more, with little effort it's possible to define roles, associate user accounts with
roles, and determine what functionality is available based on the currently logged in user's role (see Part
2 ). Many ASP.NET sites that use Membership have an Admin role, and users in that role are granted certain functionality not available to non-Admin users.
Consider an online store - Admin users might be able to manage inventory, whereas the only way normal members could interact with the inventory was
by adding items to their shopping cart.
I was recently working with a client who had an interesting request: he needed the ability for Admin users to be able to log into the site
as another user, and perform actions as if that other person had logged in herself. Returning to the online store example, imagine that some customers
periodically phone in their order, or mail or fax in an order form. An Admin, receiving this order, could then log into the site as that customer
and place the order on the customer's behalf.
This article shows how to allow an Admin user to log into a Membership-based website as another user, and includes a complete working demo available
for download at the end of the article. Read on to learn more!
Read More > Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here . | Go |
| Examining ASP.NET 2.0`s Membership, Roles, and Profile - Part 13 ... ASP.NET's forms-based authentication system in tandem with the Membership API and Login Web controls make it a cinch to create a user store, create
user accounts, and allow visitors to log into the site. What's more, with little effort it's possible to define roles, associate user accounts with
roles, and determine what functionality is available based on the currently logged in user's role (see Part
2). Many ASP.NET sites that use Membership have an Admin role, and users in that role are granted... Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here . | Go |
| A Basic ASP.NET Pager Control ... A basic ASP.NET Pager User Control... Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here . | Go |
| ASP.NET.com Links |
| Interesting Finds: 2008.10.24~10.25 ... .NET New .NET Logos announced today! - ASP.NET Patterns every developer should know Writing a simple lexicon scanner in .NET How to generate key pairs, encrypt and decrypt data with .NET (C#) Architecting .NET Web Applications for Scale & Performance (A Practical Guide) Conquering Deep Zoom, making tiles, and other Silverlight 2 thoughts Web Introducing WysiHat: An eventually better open source WYSIWYG editor - download CSSHttpRequest: cross-domain Ajax using CSS for transport - download Using jQuery Slider to Scroll a Div Create a professional interface for your web applications using jQuery Other The One Thing Every Software Engineer Should Know Custom Exceptions: When should you create them? | Go |
| INETA Community Champion Award came today ... Could this weekend get any better. My little girl gets to see High School Musical today, I leave for PDC tomorrow (I have a lot of people to meet) oh and I received box today from INETA . My Community Champion award came in, I received a Letter of Commendation and a nice Award to. Thanks INETA for recognizing the work I have done for the past year. Next up Microsoft MVP. Here are the pictures. Wrapping Certificate Letter of Commendation | Go |
| KaizenConf - Functional Programming – Is it a game changer? ... Next week at the "Continuous Improvement in Software Development Conference" (KaizenConf), I will be giving a session called "Functional Programming - Is it a game changer?". In this discussion, I'll cover the basics of functional programming, moving from an imperative style to a functional style, and what benefits you get from it.
Some of the topics to be covered are:
What is Functional Programming?
Why is it important?
How does it affect our code?
How can we get there?
What roadblocks do we face?
It's a rather ambitious schedule to talk about these topics in a three hour timespan, but I'll do my best. One of the more important topics is around how it affects your code, and can you mix and match OOP and FP.
How Does Functional Programming Affect Your Code?
Brian McNamara, of the F# team, posted "How does functional programming affect the structure of your code?" in which he talks about something that is near and dear to my heart. There are three areas in which functional programming can affect your code, "in the large", "in the medium" and "in the small".
Another name for "in the large" is high level design. Here, functional programming has its least influence as we're too high up to really have any impact other than breaking into functionality and modules, which is true of any paradigm we choose. At this level, we could talk about messaging architectures, where functional programming is well suited. A mixture of OOP and FP using F#, or even C# can implement a wide array of possible solutions. Laziness at this level can be a part of your architecture, only computing what is absolutely needed, instead of large blocking calls.
Moving onto "in the medium", we talk about the actual program structure of modules, classes, interfaces and so on. For many applications, the OOP paradigm, with its classes/nouns first and methods/verbs second approach works nicely. But, in other instances, such as some design patterns, where the need for classes is just noise. For such such patterns as comparers, commands, strategy and others, classes aren't necessary, instead, simple functions will do. Another important aspect of class design is mutability. An immutable by default stance lessens the impact of shared state and its evils when it comes to moving towards parallel applications.
Then "in the small", we talk about the function/method level of our code. At this level, this is where functional programming is most apparent. Using high order functions to perform operations on your objects enable you to write more concise and compact code. At this point, we're moving away from imperative code where we tell the machine how we want to do things, instead of what we want. With the use of currying, recursion and other techniques, we're able to simplify our code and allow for more code reuse.
When we think about how it affects our code, it's best to look at all three levels in order to determine how our code can be affected by functional programming. Using these techniques at each level can help simplify our code, especially in data intensive domains.
How Relevant Is It?
One topic that comes to bear frequently is, "How applicable is this to the standard Line of Business application developer?". That question was asked once again on .NET Rocks Episode 388 with Uncle Bob Martin . Bob was talking about how he has a tendency to follow the Pragmatic Programmers advice to learn a new language every year. Recently, there has been a focus on functional languages with such languages as Haskell, Erlang, F#, Scala, and Common Lisp, so naturally there was a tendency to learn this paradigm. Carl challenged that functional programming really isn't relevant to the line of business application developers. Due to such things as immutable by default, Carl simply could not grasp the fact that with functional programming languages, that we could in fact write business applications, | Go |
| REST and Workflow services play well together ... REST is not just about CRUD interfaces for your services, a complete long-running workflow can be modeled through the basic verbs as well. As my friend Jesus mentioned , the article "How to get a cup of coffee " represents an excellent source about this topic.
The example I will show here is based on that article, during the course of this post I will try to illustrate all the steps required to implement a workflow as the one mentioned there using WF services. Unfortunately, no examples exist (or at least I could not find any) about how to configure the WCF web model to use the new WF services, so I decided to create a new one from scratch.
This example only illustrates the workflow from the customer point of view, he can place an order, pay it and wait for his drink. He can also modify the order in the middle before it is paid.
The interface for our REST service will looks like this:
[ServiceContract ]
public interface IOrderService
{
[OperationContract ]
[WebInvoke (Method="POST" , UriTemplate="order" )]
Order PlaceOrder(Order order);
[OperationContract ]
[WebInvoke (Method = "PUT" , UriTemplate = "order/{id}" )]
Order UpdateOrder(string id, Order order);
[OperationContract ]
[WebInvoke (Method="PUT" , UriTemplate="payment/order/{id}" )]
void PayOrder(string id, Payment payment);
}
Only three operations available, each one maps exactly with one ReceiveActivity in the workflow. For instance, the receive activity OnOrderPlaced waits for a client call to the PlaceOrder operation and then moves the workflow to the next state, which is "OrderPlaced" in this case. While the workflow is in the state "OrderPlaced", only the operations UpdateOrder and PayOrder can be executed by the client (If he try to execute PlaceOrder again, it will receive a 404 http error, "Not found").
The OnOrderPlacedCode is an simple code activity that contains the actual operation implementation. I used a code activity for a sake of simplicity, a custom activity for creating the order could also be used there.
The code for this activity is quite simple, most of it is hard-coded,
private void OnOrderPlacedCode_ExecuteCode(object sender, EventArgs e)
{
currentOrder = new Order ();
currentOrder.OrderId = Guid .NewGuid().ToString();
currentOrder.Cost = (receivedOrder.Drink == "latte" ) ? 6 : 10;
currentOrder.Drink = receivedOrder.Drink;
currentOrder.Next = new Next [] {
new Next
{
Rel = "http://starbucks.example.org/payment" ,
Uri = "http://localhost:8000/payment/order/" + currentOrder.OrderId.ToString(),
},
new Next
{
Rel = "http://starbucks.example/order/update" ,
Uri = "http://localhost:8000/order/" + currentOrder.OrderId.ToString()
}};
//Persist the order in some place.....
WebOperationContext .Current.OutgoingResponse.StatusCode = System.Net.HttpStatusCode .Created;
}
currentOrder contains the instance of the order that will be returned by the service operation whereas receivedOrder is the order sent by the client application. This was map to the operation signature in the receive activity,
Once the workflow is ready to be used, all we need is to configure the service host so the client application can start consuming the operations. At this point, we will face three issues:
1. If you want to host a WF service, a WorkflowServiceHost class has to be used in the host program. Therefore, we will not have all the automatic infrastructure configuration provided by WebServiceHost, all the configuration must be done manually. It would be great to have here a combination of both service hosts.
2. There is not a context binding for WebHttpBinding, only BasicHttpContextBinding, NetTcpContextBinding and WsHttpContextBinding are supported. We will have to use a custom binding.
3. A cookie must be used to transfer the context information between the client and the service, it would much better to have support for http headers here. | Go |
| Attending PDC come see a quick demo of .NET Task Service ... I will be giving a 5 minute demo of the .NET Task Service application that I mentioned in this post . The demo will be at the CodePlex town hall on Wednesday at PDC. | Go |
| Building an Error Icon in WPF ... When you launch a XBAP application you can sometimes stumble over the XBAP error page which might look something like this:
Here's a WPF user control that you can drop into any application that simulates the error icon you see. It's a simple Canvas control with two Grids and uses Paths and Elipses to define the graphical look.
First create a new WPF User Control in your project or a library. Name it whatever you like, I called mine ErrorIcon. It'll be a type derived from UserControl so go into the XAML and change this to Canvas and also update the ErrorIcon.xaml.cs class to derive from Canvas instead of UserControl.
<Canvas x:Class="WpfApplication1.UserControl1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Height="300" Width="300" >
<Grid>
</Grid>
</Canvas>
namespace WpfApplication1
{
/// <summary>
/// Interaction logic for UserControl1.xaml
/// </summary>
public partial class UserControl1 : Canvas
{
public UserControl1()
{
InitializeComponent();
}
}
}
Now drop in the following XAML code into your newly created Canvas:
<Canvas x:Class="WpfApplication1.ErrorIcon" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" x:Uid="ErrorCanvas" Margin="0,3,0,0" Width="44" >
<Grid Name="RedWarning" x:Uid="RedWarning" Width="44" Height="44" Visibility="Visible" >
<Ellipse x:Uid="Ellipse_1" >
<Ellipse.Fill>
<LinearGradientBrush x:Uid="LinearGradientBrush_14" StartPoint="0,0" EndPoint="0,1" >
<LinearGradientBrush.GradientStops>
<GradientStopCollection x:Uid="GradientStopCollection_4" >
<GradientStop x:Uid="GradientStop_32" Color="OrangeRed" Offset="0" />
<GradientStop x:Uid="GradientStop_33" Color="DarkRed" Offset="1" />
</GradientStopCollection>
</LinearGradientBrush.GradientStops>
</LinearGradientBrush>
</Ellipse.Fill>
<Ellipse.Stroke>
<LinearGradientBrush x:Uid="LinearGradientBrush_15" StartPoint="0,0" EndPoint="0,1" >
<LinearGradientBrush.GradientStops>
<GradientStopCollection x:Uid="GradientStopCollection_5" >
<GradientStop x:Uid="GradientStop_34" Color="transparent" Offset="0" />
<GradientStop x:Uid="GradientStop_35" Color="#44ffffff" Offset="1" />
</GradientStopCollection>
</LinearGradientBrush.GradientStops>
</LinearGradientBrush>
</Ellipse.Stroke>
</Ellipse>
<Ellipse x:Uid="Ellipse_2" Opacity="0.5" Stroke="Transparent" Margin="1" >
<Ellipse.Fill>
<LinearGradientBrush x:Uid="LinearGradientBrush_16" StartPoint="0,0" EndPoint="0,1" >
<LinearGradientBrush.GradientStops>
<GradientStopCollection x:Uid="GradientStopCollection_6" >
<GradientStop x:Uid="GradientStop_36" Color="white" Offset="0" />
<GradientStop x:Uid="GradientStop_37" Color="transparent" Offset="1" />
</GradientStopCollection>
</LinearGradientBrush.GradientStops>
</LinearGradientBrush>
</Ellipse.Fill>
</Ellipse>
<Path x:Uid="Path_1" Stretch="Fill" Width="19.878" Height="19.878" StrokeThickness="5" Stroke="#FFFFFFFF" StrokeStartLineCap="Round" StrokeEndLineCap="Round" Data="M 200,0 L 0,200 M 0,0 L 200,200" />
</Grid>
<Grid x:Uid="RedReflection" Width="44" Height="44" Visibility="Visible" Canvas.Top="80" Canvas.Left="0" >
<Grid.OpacityMask>
<LinearGradientBrush x:Uid="LinearGradientBrush_20" StartPoint="0,1" EndPoint="0,0" >
<GradientStop x:Uid="GradientStop_44" Offset="0" Color="#3000" />
<GradientStop x:Uid="GradientStop_45" Offset="0.9" Color="Transparent" />
</LinearGradientBrush>
</Grid.OpacityMask>
<Grid.RenderTran | Go |
| Handling Unhandled Exceptions in XBAP Applications ... In your own applications you'll generally want a "catch-all" handler that will take care of unhandled exceptions. In WinForms apps this is done by creating an unhandled exception delegate and (optionally) creating an AppDomain unhandled exception handler. Peter Bromberg has a good article on all of this here and I wrote about the various options for WinForms apps here .
With XBAP (XAML Browser Applications) the rules are slightly different so here's one way to do it.
Take your existing XBAP app (or create a new one) and in the App.xaml.cs file you'll want to create a new event handler for unhandled exceptions. You can do this in the Startup method like so:
protected override void OnStartup(StartupEventArgs e)
{
DispatcherUnhandledException += App_DispatcherUnhandledException;
base .OnStartup(e);
}
In our exception handler, we'll do two things. First we'll set the exception to be handled and then we'll set the content of the MainWindow (a property of the Application class) to be a new exception handler page.
private void App_DispatcherUnhandledException(object sender, DispatcherUnhandledExceptionEventArgs e)
{
e.Handled = true ;
MainWindow.Content = new ExceptionHandlerPage ();
}
That's really the basics and works. However you don't have the exception information passing onto the new page. We can do something simple for now. Here's the XAML for a simple error handling page:
<Page x:Class="XbapExceptionHandlerSpike.ExceptionHandlerPage"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Width="300" Height="300"
Title="ExceptionHandlerPage" >
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="23" />
<RowDefinition />
</Grid.RowDefinitions>
<TextBlock Margin="10,0,0,0" VerticalAlignment="Center" Grid.Row="0" Text="An exception has occured. Here are the details:" />
<TextBlock Margin="10,0,0,0" Grid.Row="1" x:Name="ErrorInformation" Foreground="Red" FontFamily="Consolas" TextWrapping="Wrap" />
</Grid>
</Page>
I gave a name to the TextBlock in the second row in the grid. This is the control that will display our error message. I've also styled it and set the font to be a mono-spaced font.
We can update our creation of the ExceptionHandlerPage class to include the exception details like so:
private void App_DispatcherUnhandledException(object sender, DispatcherUnhandledExceptionEventArgs e)
{
e.Handled = true ;
var page = new ExceptionHandlerPage
{
ErrorInformation = {Text = e.Exception.Message}
};
MainWindow.Content = page;
}
Now our page displays the error with the details provided:
Again, this is really simple and bare-bones. You can get creative with it with things like fancy fonts, dancing bears, floating borders, etc. and passing along the entire Exception (so you might walk through the inner exceptions and details) and even log the exception to your bug tracking system. Jeff Atwood has a great article on creating friendly custom Exception Handlers (one for WinForms here , one for ASP.NET here ). A WPF version might be useful.
As with WPF apps, there are a lot of ways to skin this cat. This is just my take on it. Feel free to offer your own twist. | Go |
| Customizing our MembershipProvider Class - Creating a Custom Membership Provider and Membership User utilizing a Data Set Table Adapter - Step 8 ... In this series, we are now ready to customize our MembershipProvider class. We will use a custom Remember Me log in cookie.
Our ValidateUser, CreateUser, and GetUser methods are written using table adapters.
In this article, we explain the problem with: Response.Redirects and ThreadAbortException
Read the entire article here... | Go |
| ASP.NET MVC Tip: Dependency Injection with Unity Application Block ... In my earlier post , I have explained how to use dependency injection pattern in ASP.net MVC application using StructureMap. In this post, I demonstrate how you can use dependency injection pattern using Microsoft’s Unity Application Block (Unity). If you want to develop an ASP.NET MVC application fully with Microsoft stack, you can use Unity Application Block to perform dependency injection. Some organizations do not allow using any open source technologies. In such scenario, Unity will help the ASP.NET MVC developer. Unity is a cool dependency injection container and I hope that it will become more powerful in the future releases. Introduction to Unity Unity is a lightweight, extensible dependency injection container that provides the support for constructor, property, and method call injection. Unity has a service location capability that allows the ASP.NET developer to store or cache the container in the ASP.NET session, application or per Request. Register Dependencies Unity provides two methods for registering types and mappings with the container. The RegisterType method registers a type with the container and the RegisterInstance method registers with the container an existing instance of a type.
Normal
0
false
false
false
/* Style Definitions */
table.MsoNormalTable
{mso-style-name:"Table Normal";
mso-tstyle-rowband-size:0;
mso-tstyle-colband-size:0;
mso-style-noshow:yes;
mso-style-parent:"";
mso-padding-alt:0cm 5.4pt 0cm 5.4pt;
mso-para-margin:0cm;
mso-para-margin-bottom:.0001pt;
mso-pagination:widow-orphan;
font-size:10.0pt;
font-family:"Times New Roman";
mso-ansi-language:#0400;
mso-fareast-language:#0400;
mso-bidi-language:#0400;}
IUnityContainer container = new UnityContainer ();
//Register
Dependencies
container .RegisterType <ICategoryRepository , CategoryRepository >( );
The above code tells the Unity Container that, to inject the instance of CategoryService when there is a request for ICategoryService and the container will create a new instance of CategoryService every time when there is request for ICategoryService. The default behavior is for the container to use a transient lifetime manager and the container will not store or cache a reference to the object. If you want singleton behavior for objects, you have to register a LifetimeManager. A lifetime manager controls how stores references to object instances and reused within the container.
Normal
0
false
false
false
/* Style Definitions */
table.MsoNormalTable
{mso-style-name:"Table Normal";
mso-tstyle-rowband-size:0;
mso-tstyle-colband-size:0;
mso-style-noshow:yes;
mso-style-parent:"";
mso-padding-alt:0cm 5.4pt 0cm 5.4pt;
mso-para-margin:0cm;
mso-para-margin-bottom:.0001pt;
mso-pagination:widow-orphan;
font-size:10.0pt;
font-family:"Times New Roman";
mso-ansi-language:#0400;
mso-fareast-language:#0400;
mso-bidi-language:#0400;}
container .RegisterType <ICategoryRepository ,
CategoryRepository >(new ContainerControlledLifetimeManager ());
The above registration specify that any time an instance of ICategoryService is requested, you will get back the same instance of CategoryService as long as the container is alive. The container will create a new instance at the time of first request and will be use the same instance for the later requests. The ContainerControlledLifeTimeManager class provides the singleton behavior for the container. You can create your own custom LifetimeManager class derive from LifetimeManager class. The important methods of LifetimeManager class are GetValue that returns the instance, SetValue method store the instance value and RemoveValue method reomove the instance from the container. public abstract class LifetimeManager : ILifetimePolicy { public abstract o | Go |
| .net Workshop ... while surfing i found out that there is people that love to share knowladge. one of them is Richard Grimes. He shared a full workshop about three subjects; Fusion Workshop This workshop teaches you all of the aspects of how .NET locates
and loads assemblies. Security Workshop This workshop teaches you how .NET security works and how you can
use the administration tools to configure it. Instrumentation Workshop This workshop teaches you how to add instrumentation to your .NET
applications. Maybe he create and worte about these subjects early starting in 2005 but i think you should take a look. | Go |
