| DotNetKicks.com Links |
| .NET Framework FAQ ... The .NET Framework FAQ will give you an insight to the .NET platform. They form the basis of an interview and the interviewer asks them to guage your familiarity with the platform. The q&a have been collected over a period of time using MSDN and other similar sites. | Go |
| Sql server 2005 : OVER clause ... I found it very useful. Let me give you a quick overview of the OVER clause. Not very detailed but a will prove a nice kick start for you guys. | Go |
| Syntax highlighting in BlogEngine.NET ... In forums and blogs in the BlogEngine community issues with the syntax highlighter extension has been brought up. | Go |
| ASP.NET MVC - ActionResult... The Good & Not So Bad ... Here's a quick summary of the different types:
1. RenderViewResult
2. ActionRedirectResult
3. HttpRedirectResult
4. EmptyResult | Go |
| How to compress viewstate in ASP.NET 2.0 ... This article demonstrates how to extend the functionality of the new System.IO.Compression namespace to compress and decompress viewstate information in ASP.NET 2.0 pages. | Go |
| Inversion of Control, ASP.NET MVC and Unit Testing ... Using the inversion of control pattern to write testable controllers with the latest ASP.NET MVC bits. | Go |
| Restart SQL in ASP.NET ... this is some vb.net code that shows you how to restart a sql server in asp.net | Go |
| Convert a DataReader to DataTable in ASP.NET ... Let us explore how to convert a datareader to a DataTable using two approaches. We will first see how to do the conversion using the Load() method of the DataTable. Alternatively, we will also explore converting the DataReader to DataTable manually. | Go |
| Chat Question: What extension to use in what situation ... What debugger extension to load when. | Go |
| ASP.NET Controls for amCharts 1.5 Released ... New version of ASP.NET controls for one of the most popular flash charting packages has been released. Custom context menu items, guides, gradient colors are just a few of the features added. | Go |
| Sending Email In ASP.NET 2.0
... Sending email's from web applications is a very common requirement in most projects. This article explores how to send Emails in ASP.NET 2.0 with attachments. | Go |
| ASP.NET MVC: Using a ActionFilter for logging ... Better ActionFilters in the refresh or pre-preview 3 of the MVC Framework. | Go |
| ASP.NET Tab Missing ... ASP.NET Tab missing from the IIS manager, how to fix that. | Go |
| Regex find a word in a phrase. Find a word not in a phrase ... Excellent example of how to find a word in a phrase using regex. | Go |
| Delicious tagged ASP.NET Links |
| ASP.NET AJAX Web | Go |
| ASP.NET MVC Source Refresh Preview - ScottGu's Blog | Go |
| WorldofASP.NET: Tips to Improve Your ASP.NET Web site performance | ASP.NET | Go |
| Main Page - ScrewTurn Software | Go |
| Clean Up ASP.NETs Head Tag With ControlAdapters | Go |
| Why do ASP.NET AJAX page methods have to be static? | Encosia | Go |
| Asp.Net | Go |
| Coolite Inc. - ASP.NET Web Controls | Go |
| How to enable pretty urls with Asp.Net MVC and IIS6 : Bia Securities | Go |
| How to disable web.config Inheritance for Child Applications in Subfolders in ASP.NET? | Go |
| umbraco | Go |
| Skinned Login Control | Go |
| Scott Gu Blog Links |
| ASP.NET MVC Source Refresh Preview ... We recently opened up a new ASP.NET CodePlex Project that we will be using to provide previews (with buildable source code) for several upcoming ASP.NET features and releases. Last month we used it to publish the first drop of the ASP.NET MVC source code . This first drop included the source for the ASP.NET MVC Preview 2 release that we shipped at MIX, along with Visual Studio project files to enable you to patch and build it yourself. A few hours ago we published a refresh of the ASP.NET MVC source code on the site. This source refresh is not an official new ASP.NET MVC preview release - instead it is an interim drop that provides a look at the current state of the source tree. We will ship the official "ASP.NET MVC Preview 3" release in a few weeks after we finish up some more work (more features and tweaks to existing ones, better VS tool integration, VS express edition support, documentation, etc). If you are someone who wants a hassle-free installation of ASP.NET MVC to use that ships with documentation and full tool support you'll probably want to wait for this official preview release. If you are someone who wants a chance to see an early "preview of the preview" and have the opportunity to start using and giving feedback on some of the features immediately, today's source refresh is probably interesting to look at. Improvements with this ASP.NET MVC Source Refresh This week's update (which you can download here ) includes a number of improvements to ASP.NET MVC. Some of these include: In addition to posting the source code for the ASP.NET MVC framework, we are also posting the source code for the unit tests that we use to test it. These tests are implemented using MSTest and the open source Moq mocking framework. A VS 2008 project file for the unit tests is included to make it easy to build and run them locally within your VS 2008 IDE. Significantly easier support for testing Controller classes. You can now unit test common Controller scenarios without having to mock any objects (more details on how this works below). Several nice feature additions and usability improvements to the URL routing system (more details below). Creating a New ASP.NET MVC Project You can build your own copy of the ASP.NET MVC assemblies by downloading the MVC source and compiling it locally, or alternatively you can download a VS Template package to get a pre-built version of them along with a Visual Studio project template that you can use to quickly build a new ASP.NET MVC Project that uses the latest bits. After you install the ASP.NET MVC source refresh .VSI template, a new "ASP.NET MVC Application" project template will show up under the "My Templates" section of your "New Project" dialog: This new "My Templates" version of the MVC project template lives side-by-side with the previous ASP.NET MVC Preview 2 release (which you can see above it in the main project templates section of the dialog). This allows you to safely create new projects and and use both the latest source version and the last official preview version on the same machine. When you create a new project using this updated ASP.NET MVC Project template you'll by default get a project that looks like below: This new project solution contains one Controller ("HomeController") under the "\Controllers" directory and two View templates ("About" and "Index") under the "\Views\Home" sub-directory. Both view templates are based on a common master page for the site ("Site.master"), all of whose styles are defined within a "Site.css" file under the "\Content" directory. When you run the application the built-in web-server will automatically start up and you'll see the site's "Home" content: Clicking the "About us" tab will then display the "About" content: The "HomeController" class in the project is responsible for handling both of the URLs above and has two action methods like below: The default "Site.master" templat | Go |
| April 11th Links: ASP.NET, ASP.NET AJAX, ASP.NET MVC, Visual Studio, 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 More ASP.NET Security Tutorials : The last three of Scott Mitchell's excellent ASP.NET security tutorials . His final three articles cover how to select user accounts, recover and change passwords, and unlock and approve user accounts. Building a VS 2008 Styled Grid with the ListView and DataPager Controls : Matt Berseth has a great article that talks about techniques you can use with the new ASP.NET 3.5 ListView control to create a nicely styled Grid UI - while preserving total control over the HTML and CSS used. Also read his follow-up post here that talks about how to achieve the same UI with the GridView control. 50 Useful CSS Tips and Tricks: A useful page that provides a nice listing of various CSS tips, tricks and tools you can use for common web scenarios. Using a DataPager with the GridView Control - Implementing IPageableItemContainer : Matt Berseth has a cool article that shows how to use the new IPageableItemContainer interface to implement paging support with the new ASP.NET 3.5 DataPager control. ASP.NET AJAX Accessible UpdatePanel : Bertrand Le Roy from the ASP.NET team has an article that describes how to make the ASP.NET AJAX's UpdatePanel control accessible for screen-readers. ASP.NET AJAX Meets Virtual Earth : Alessandro Gallo, author of the excellent ASP.NET AJAX in Action book, has a nice series of articles that talks about using ASP.NET AJAX with Virtual Earth to implement mapping on your site. Faster Page Loading by Moving ASP.NET AJAX Scripts after visible content : Omar Al Zabir (the co-founder of www.PageFlakes.com ) has a great article that describes a nice technique you can use to improve the perceived loading performance of an ASP.NET AJAX page. I also highly recommend reading Omar's great Building a Web 2.0 Portal with ASP.NET 3.5 book to learn some of his other suggestions and techniques. 3 Tips for Working with ASP.NET AJAX's TabContainer Control : Matt Berseth continues his great articles on ASP.NET AJAX with some tips on working with the TabContainer control in the ASP.NET AJAX Control Toolkit. Building ASP.NET AJAX Components: Mike Ormond has written an excellent 8-part series that covers building re-usable ASP.NET AJAX components that work on both the client and server. ASP.NET MVC An Introduction to ASP.NET MVC using VB : Bill Burrows from www.MyVBprof.com has put together a great set of online videos that introduce ASP.NET MVC using Visual Basic. Also make sure to check out his video series on LINQ to XML using VB and LINQ to SQL using VB . ASP.NET MVC: Membership Starter Kit : Troy Goode has a built an awesome membership starter kit for ASP.NET MVC that provides registration and login pages for users to authenticate on your site, as well as a set of administration functionality that allows admins to create/manage users and roles. Download it here . ASP.NET MVC: Action Filter for Handling Errors : Troy Goode has another good post that provides some ASP.NET MVC action filters for catching and handling runtime errors. How to Enable Pretty URLs with ASP.NET MVC and IIS6: James Geurts posts a useful article that describes how to enable extension-less URLs with ASP.NET MVC on IIS6 (note: you do not need to configure anything special with ASP.NET MVC on IIS7 to enable extension-less URL support). Visual Studio PowerCommands for Visual Studio 2008 : A free set of useful extensions for VS 2008 that add a bunch of cool features to the IDE. Coding Productivity: Macros, Shortcuts and Snippets : Kirill Osenkov has a nice blog post that shows of how to use Visual Studio's macro feature to custom record useful time-savers. Silverlight Dave Campbell's Excellent Silverlight Link Series : Dave Campbell posts a regular series of links to new Silverlight articles and conte | Go |
| ASP.NET Dynamic Data Preview Available ... A few months ago we released an ASP.NET 3.5 Extensions Preview that contained a bunch of new features that will be shipping later this year (including ASP.NET AJAX Improvements, ASP.NET MVC, ASP.NET Silverlight Support, and ASP.NET Dynamic Data). The ASP.NET Dynamic Data support within that preview provided a first look at a cool new feature that enables you to quickly build data driven web-sites that work against a LINQ to SQL or LINQ to Entities object model. ASP.NET Dynamic Data allows you to automatically render fully functional data entry and reporting pages that are dynamically constructed from your ORM data model meta-data. In addition to supporting a dynamic rendering mode, it also allows you to optionally override and customize any of the view templates using any HTML or code you want (given you full control of the experience). ASP.NET Dynamic Data Preview Today we released an updated ASP.NET Dynamic Data Preview. You can learn more about it and download it here . This new dynamic data preview now works with the standard built-in ASP.NET data controls (GridView, ListView, FormView, DetailsView, etc). The dynamic data support enables these controls to automatically handle foreign-key relationships. For example, on a gridview you'll now get automatic friendly name display of foreign key column values and automatic drop-down list selection support of these values when in edit mode: The new dynamic data support also provides automatic UI validation support (both client-side and server-side) based on the constraints you set on your data model classes. For example, if a column in the database is limited to 50 characters in size, and is marked as non-nullable, appropriate UI control validators will automatically be applied by ASP.NET dynamic data to enforce this constraint in the UI pages as well. If you change the constraints within your LINQ to SQL or LINQ to Entities data model classes, the UI will automatically pick up these changes and enforce the new constraints on the next web request. In addition to standard data model metadata, you can also declare custom metadata to further control validation and the default display of UI of objects. You will be able to use all of the above features with both LINQ to SQL and LINQ to Entities. Visual Studio Dynamic Data Project Wizard In addition to the core ASP.NET dynamic data runtime support, the VS web tools team today also shipped a first preview of a new dynamic data project wizard that enables you to quickly get a data driven web-site started. The wizard allows you to select a database, and then the tables, views and sprocs within it that you want to build a LINQ to SQL data model around: After creating a data model, the wizard allows you to easily choose dynamic data driven template pages to build UI around it: You can then choose what type of inserting/editing/updating UI is supported on each page: And when you click finish it will setup a project with your data model classes and data UI pages setup to run. You can learn more about the wizard and watch it in action in a blog post and screencast here . How to Get Started You can learn more about this new dynamic data preview and download and run it locally here . You can watch David Ebbo's dynamic data presentation at MIX 08 to learn more about how it works. Also check out Scott Hunter's screen-cast here , and Brad Millington's screen cast here . David also has a post here that talks about the changes made between the December preview and today's preview release. You can ask questions and submit feedback via the www.asp.net forums here . Hope this helps, Scott | Go |
| Tip/Trick: Creating and Using Silverlight and WPF User Controls ... One of the fundamental design goals of Silverlight and WPF is to enable developers to be able to easily encapsulate UI functionality into re-usable controls. You can implement new custom controls by deriving a class from one of the existing Control classes (either a Control base class or from a control like TextBox, Button, etc). Alternatively you can create re-usable User Controls - which make it easy to use a XAML markup file to compose a control's UI (and which makes them super easy to build). In Part 6 of my Digg.com tutorial blog series I showed how to create a new user control using VS 2008's "Add New Item" project item dialog and by then defining UI within it. This approach works great when you know up front that you want to encapsulate UI in a user control. You can also use the same technique with Expression Blend. Taking Existing UI and Encapsulating it as a User Control Sometimes you don't always know you want to encapsulate some UI functionality as a re-usable user control until after you've already started defining it on a parent page or control. For example, we might be working on a form where we want to enable a user to enter shipping and billing information. We might begin by creating some UI to encapsulate the address information. To-do this we could add a <border> control to the page, nest a grid layout panel inside it (with 2 columns and 4 rows), and then place labels and textbox controls within it: After carefully laying it all out, we might realize "hey - we are going to use the exact same UI for the billing address as well, maybe we should create a re-usable address user control so that we can avoid repeating ourselves". We could use the "add new item" project template approach to create a blank new user control and then copy/paste the above UI contents into it. An even faster trick that we can use within Blend, though, is to just select the controls we want to encapsulate as a user control in the designer, and then "right click" and choose the "Make Control" menu option: When we select the "Make Control" menu item, Blend will prompt us for the name of a new user control to create: We'll name it "AddressUserControl" and hit ok. This will cause Blend to create a new user control that contains the content we selected: When we do a re-build of the project and go back to the original page, we'll see the same UI as before - except that the address UI is now encapsulated inside the AddressUserControl: We could name this first AddressUserControl "ShippingAddress" and then add a second instance of the user control to the page to record the billing address (we'll name this second control instance "BillingAddress"): And now if we want to change the look of our addresses, we can do it in a single place and have it apply for both the shipping and billing information. Data Binding Address Objects to our AddressUserControl Now that we have some user controls that encapsulate our Address UI, let's create an Address data model class that we can use to bind them against. We'll define the class like below (taking advantage of the new automatic properties language feature): Within the code-behind file of our Page.xaml file we can then instantiate two instances of our Address object - one for the shipping address and one for the billing address (for the purposes of this sample we'll populate them with dummy data). We'll then programmatically bind the Address objects to our AddressUserControls on the page. We'll do that by setting the "DataContext" property on each user control to the appropriate shipping or billing address data model instance: Our last step will be to declaratively add {Binding} statements within our AddressUserControl.xaml file that will setup two-way databinding relationships between the "Text" properties of the TextBox controls within the user control and the properties on the Address data model object that we attached to the user control: W | Go |
| Unit Testing with Silverlight ... One of the important capabilities we shipped with the Beta1 release of Silverlight 2 was a unit test harness that enables you to perform both API-level and UI-level unit testing. This testing harness is cross browser and cross platform, and can be used to quickly run and verify automated unit tests: In addition to shipping this unit test harness for Silverlight, we also shipped the source to ~2,000 unit tests built with it that provide automated coverage for the Silverlight control source that we also shipped under a permissive license (you can take the control source, modify it, run the unit tests to verify the behavior, then re-ship the controls however you want). Learning How to Unit Test Silverlight Jeff Wilcox (who developed the Silverlight unit test framework and harness) has a great blog post that talks about how to add a Silverlight Unit Test project to a solution here . You can download the chat application that he shows testing from this expression blend blog post tutorial I did last month. You can also watch this cool video post that Jeff created where he walks through the unit test framework and test cases we've shipped. As Jeff shows in his post, you can now add a "Silverlight Test Project" to your Visual Studio solution which encapsulates unit tests for an application you are working on: You can then add unit test classes to the test project that test APIs or simulate UI action within the Silverlight controls (simulate button clicks, etc). You can then run the test project and execute the tests within it to verify and report their status. Jeff's test framework automatically provides a browser based test harness and reporting system (which means you can run it on any browser/OS combination that Silverlight runs on): Jeff's test framework supports quickly re-setting controls after each test (and avoids needing to re-launch a new browser instance for each test cases - which makes it really fast). You can quickly rip through hundreds or thousands of automated tests in seconds: Green results mean the tests passed. Red results flag that a test case failed and log the assertion failure and/or runtime exceptions that occurred. Summary If you've ever struggled to try and come up with a strategy for doing automated unit testing or TDD with AJAX applications, I think you'll find Silverlight provides some much nicer test options. Using Visual Studio you can also separate your tests into a separate project in your solution, and you do not need to embed the tests within your Silverlight application in order for them to run. In addition to supporting the above unit test harness and framework, we are also going to support UI automation APIs with the final release of Silverlight 2. These will enable accessibility scenarios (allowing screen readers to work with Silverlight and enable Section 508 compliance of Silverlight applications). These UI automation APIs will also enable UI testing scenarios where you can build end to end browser UI automation that simulates real mouse and keyboard interactions and enables automated end to end experience testing. The combination should enable you to build much more solid and maintainable RIA solutions. Hope this helps, Scott P.S. For more tutorial posts and links on Silverlight 2, check out my new "Silverlight Tips, Tricks, Tutorials and Links" page. | Go |
| March 28th Links: ASP.NET, ASP.NET AJAX, ASP.NET MVC, Visual Studio, Silverlight, .NET ... Here is the latest in my link-listing series . Also check out my ASP.NET Tips, Tricks and Tutorials page for links to popular articles I've done myself in the past. ASP.NET Three New ASP.NET Security Tutorials Now Available : Scott Mitchell continues his great ASP.NET security tutorials . These three new ones cover creating and managing roles, assigning roles to users, and implementing role based authorization. You can also find more security articles by reading posts on my blog tagged with security . .NET Libraries to Digg, Flickr, Facebook, YouTube, Twitter, and other Web 2.0 APIs : Scott Hanselman's latest "weekly source code" review looks at .NET APIs that you can use to call popular web 2.0 services. Hangs and how to Solve Them (Part 1) and (Part 2) : Tom has some useful posts that talk about deadlocks and request queuing in ASP.NET, and how to detect and debug what might be causing them. ASP.NET AJAX Building ASP.NET AJAX Controls (Part 1) , (Part 2) , and (Part 3) : Mike Ormond has started a nice blog post series that talks about how to build ASP.NET AJAX Controls. Make sure to check out Part 2 - Components and Part 3 - Properties and Events as well. New ASP.NET AJAX "How Do I?" Videos : Joe Stagner has published a number of new ASP.NET AJAX "How Do I?" videos. Learn about the re-order control , retrieving values from server-side AJAX controls , two techniques for triggering updates to update panels , and using the cascading drop down control . Real-Time Progress Bar with ASP.NET AJAX: SingingEels shows a technique for displaying real-time progress notifications using AJAX as a long-lived activity runs on the server. Using JQuery to Consume ASP.NET AJAX JSON Web Services : Dave Ward has a nice post that describes how to use the JQuery AJAX library on the client to call an ASP.NET Web Service on the server that is JSON enabled (using ASP.NET AJAX on the server). ASP.NET MVC Kigg - Building a Digg Clone with ASP.NET MVC : Kazi Manzur Rashid published an excellent Digg-clone sample built with ASP.NET MVC last February. He recently updated the code to work with ASP.NET MVC Preview 2 (full details here ). You can download the latest version of his source code here . ASP.NET MVC In-Depth: The Life of an ASP.NET Request : Stephen Walther has a great post that details the exact steps that occur when an ASP.NET MVC request executes. ASP.NET MVC Action Filters - Caching and Compression : Kazi Manzur Rashid has another great post that shows how to use the new ActionFilterAttribute support in ASP.NET MVC to implement output caching and compression attributes. Read this quickstart article to learn more about how Action Filters work, or watch Scott Hanselman's video that covers them. Defining Routes using Regular Expressions with ASP.NET MVC : Someone asked me the other day how to use regular expressions to define route rules with ASP.NET MVC. Turns out Fredrik Kalseth already has a nice sample that shows how to-do this. Testing with the ASP.NET MVC Framework : Simone Chiaretta has a great article that discusses how to test controllers using ASP.NET MVC Preview 2. Note: the next ASP.NET MVC preview release will include a number of refactorings that will simplify controller testing considerably (and avoid the need to mock anything for common scenarios). Test-Driven Development with Visual Studio 2008 Unit Tests : Stephen Walther has a really nice post that describe how the unit testing features now built-in VS 2008 Professional work (using an ASP.NET MVC project). Also check out Stephen's excellent Introduction to Rhino Mocks blog post that describes how to use the open source Rhino Mocks framework with VS unit test projects. Visual Studio VS 2008 Web Deployment Hot-Fix Roll-Up Now Available for non-English Languages: Last month we shipped a hot-fix release that fixes a number of bugs, adds a few features, and improves performance for web development scenarios in VS 200 | Go |
| New Log Reporting, Database Management, and other cool admin modules for IIS 7 ... One of the core priorities we focused on when building IIS 7 was to enable a rich .NET extensibility model that provides developers with the hooks to easily plug-in and extend the web server. These extensibility hooks are provided in the web-server pipeline (enabling scenarios like the new IIS7 Bit Rate Throttler ), within the configuration system (enabling developers to create new web.config schema settings), within the health monitoring system (enabling developers to add custom trace events), and within the admin tool (enabling developers to plug-in new admin UI modules). We added these extensibility hooks so that anyone can easily extend and enhance the web server using .NET. We also selfishly wanted them so that we can ship regular feature packs that add additional features to the core web server. IIS 7 Admin Pack Preview 1 Released Last week the IIS team shipped the first technical preview of some really cool administration modules that I think web developers will find super useful. This preview adds several new features to the IIS7 Admin Tool: Database Manager : Built-in SQL Server database management, including the ability to create, delete, and edit tables and indexes, create/edit SPROCs and execute custom queries. Because it is integrated in the IIS administration tool it all works over HTTP/SSL - which means you can use the module to remotely manage your hosted applications (even with low-cost shared hosting accounts), without having to expose your database directly on the Internet. Log Reports : Built-in report visualization with charting support for log files data. Full range selection and custom chart creation is supported, as well as the ability to print or save reports. Like the database manager you can use this module remotely over HTTP/SSL - which means it works in remote shared hosting scenarios. Configuration Editor: This is a power module that provides complete control over editing all web.config settings within the admin tool. You can configure it to track the changes you make using the UI and have it auto-generate configuration change scripts that you can then save and tweak to re-run later in an automated way. Request Filtering UI: This admin module provides more control over the new request filtering feature in IIS7. Check out Carlos' blog post here for details on how to use it. .NET Authorization: This admin module provides a custom authorization rules editor which allows you to more easily manage the ASP.NET <authorization> configuration section. FastCGI UI: This admin module provides more support for editing all the new <fastCGI> settings (for when you use FastCGI modules with IIS7 like PHP). Below are some screen-shots and simple walkthroughs of the Log Reporting and Database Manager administration UI modules: Log Reporting Admin Module Have you ever deployed a web application onto a server and wondered how much load it is getting?, what the average response time from the server is?, or whether many server errors are occurring (and if so on what URLs)? All of these settings are carefully logged by IIS in a text based log file. Today most people use command-line tools like the IIS Log Parser utility to query and analyze these files. The IIS 7 Admin Pack and the new "IIS Reports" admin module now enable you to also query and chart your reports graphically within the IIS admin tool: Out of the box the "IIS Reports" admin module comes with a bunch of pre-built logparser-based reports that you can easily run on your sites and applications: Below is a simple graphical report we could pull up that looks at the HTTP status codes being returned by my "TestSite" application (note how we are using the "bar graph" visualization option): Reports can optionally be filtered using a date range. You can also push the print or save buttons within the report page to generate a printer or a local saved version of the report. The IIS7 Admin To | Go |
| ASP.NET MVC Source Code Now Available ... Last month I blogged about our ASP.NET MVC Roadmap . Two weeks ago we shipped the ASP.NET Preview 2 Release . Phil Haack from the ASP.NET team published a good blog post about the release here . Scott Hanselman has created a bunch of great ASP.NET MVC tutorial videos that you can watch to learn more about it here .
One of the things I mentioned in my MVC roadmap post was that we would be publishing the source code for the ASP.NET MVC Framework, and enable it to be easily built, debugged, and patched (so that you can work around any bugs you encounter without having to wait for the next preview refresh release).
Today we opened up a new ASP.NET CodePlex project that we'll be using to share buildable source for multiple upcoming ASP.NET releases. You can now directly download buildable source and project files for the ASP.NET MVC Preview 2 release here .
Building the ASP.NET MVC Framework
You can download a .zip file containing the source code for the ASP.NET MVC Framework for the release page here . When you extract the .zip file you can drill into its "MVC" sub-folder to find a VS 2008 solution file for the project:
Double-clicking it will open the MVC project containing the MVC source within VS 2008:
When you do a build it will compile the project and output a System.Web.Mvc.dll assembly under a \bin directory at the top of the .zip directory. You can then copy this assembly into a project or application and use it.
Note: the license doesn't enable you to redistribute your custom binary version of ASP.NET MVC (we want to avoid having multiple incompatible ASP.NET MVC versions floating around and colliding with each other). But it does enable you to make fixes to the code, rebuild it, and avoid getting blocked by an interim bug you can't work around.
Next Steps
Our plans are to release regular drops of the source code going forward. We'll release source updates every time we do official preview drops. We will also release interim source refreshes in between the preview drops if you want to be able to track and build the source more frequently.
We are also hoping to ship our unit test suite for ASP.NET MVC in the future as well (right now we use an internal mocking framework within our tests, and we are still doing some work to refactor this dependency before shipping them as well).
Hope this helps,
Scott | Go |
| IIS 7.0 Bit Rate Throttling Module Released ... Video on the web is now one of those common scenarios that every user takes for granted, and increasingly every major site is incorporating in some form (product videos, training videos, richer advertising scenarios, user generated content, customer testimonials, etc).
One of the challenges when adding video to a site, though, is delivering it in a way that doesn't cost a fortune. Network bandwidth costs a lot of money, and the cost of high quality video usage can quickly add up.
The blog post below provides a quick overview of some of the options you can use to reduce the cost of delivering video, and discusses a new free download - the IIS 7.0 Bit Rate Throttling Module - that was released a few days ago and which enables you to easily save money when serving video from an IIS web server using any video technology (including Silverlight, Windows Media Player and even Flash).
Option 1: Using a Video Hosting Service
One approach you can take to reduce video bandwidth costs is to use a video hosting service like YouTube or the free Microsoft Silverlight Streaming Service . This allows you to use someone else's network to deliver the video content, and avoid having to pay the bandwidth costs yourself.
If you aren't familiar with the Silverlight Streaming service, it allows you to upload up to 10GB of videos and download 5 Terabytes/month of video content (at up to a 1.4 Mbps bit-rate) for free. You can build any custom Silverlight client player application you want to embed the video within it. This means it doesn't require a specific video player look and feel, nor a service logo/watermark to play the video. This allows you to fully integrate the video into your site and use whatever UI you want to host it.
Option 2: Hosting Video on Your Own Servers
Sometimes using a video hosting service doesn't make sense (for example: you want to use custom authentication to grant/deny user's access, you want to play really long video segments, or you want to serve up custom ads in your videos). Instead you might want to serve the video up from your own servers and have complete control over it.
There are typically two options you can use to deliver the video from your servers: using a streaming approach or a progressive video download approach:
Streaming Server Scenario
In a streaming scenario a client (like Silverlight, Windows Media Player, Flash or Real Networks) connects to a streaming server. The streaming server then sends down the video stream to watch, and typically enables a user to dynamically skip ahead/behind, pause or stop the video stream. When the user closes the browser or navigates away from the page the video stream automatically stops transmitting.
Windows Media Services (WMS) is a free streaming server download available for Windows, and can stream video to both Windows Media Player and cross-platform Silverlight browser clients. It is generally regarded as the most server scalable and cost effective way to enable video streaming on the web, and handles both on-demand file streaming scenarios (for example: streaming a .wmv file) as well as live stream scenarios (for example: a sporting event like the Olympics that is happening live in real time).
Windows Media Services can be used on any version of Windows Server - including the new Windows Server 2008 Web Server edition (which only costs $469, enables up to 4 processors and 32GB of RAM, and supports IIS, ASP.NET, SharePoint, and Windows Media Services).
Progressive Download Scenario
In a progressive download scenario a client (like Flash or Silverlight) downloads a video directly off of a web-server, and begins playing it once enough video is downloaded for it to play smoothly.
The benefit of using a progressive download approach is that it is super easy to setup on a web-server. Just copy/ftp a video up to a web-server, obtain a URL to it, and you can wire it up to a video client player. It doesn't require any custom web-server configurat | Go |
| March 14th Links: ASP.NET, ASP.NET AJAX, ASP.NET MVC and .NET ... I'm slowly recovering from keynoting at MIX last week, and have been digging my way out of backlogged email the last few days. I'm going to try and finish catching up on blog comments this weekend - apologies for the delay in getting back to some of your questions. To kick-start my blogging again I thought I'd post a new link-listing series . Today's post is mostly focused on ASP.NET and web related links. I'm going to be doing more Silverlight and WPF posts soon. ASP.NET Tag Cloud Filters with ASP.NET 3.5's LinqDataSource and ListView Controls : Matt Berseth has a cool post that shows off using LINQ to SQL and ASP.NET 3.5 to build a tag-cloud navigation UI. Five New ASP.NET Security Tutorials Now Available : Scott Mitchell continues his great ASP.NET security tutorials . These 5 new ones (all in both VB and C#) cover using the ASP.NET membership system. Building a Vista Style Folder Browser with ASP.NET 3.5 and a Custom Hierarchical DataSource Control: Matt Berseth continues his great posts with a nice one that shows how to build a custom HierarchicalDataSourceControl to implement file browsing functionality using ASP.NET. ASP.NET AJAX New ASP.NET AJAX Control Toolkit Release: David Anson blogs about a new ASP.NET AJAX Control Toolkit release that the team made right before MIX. This release includes a number of patches (including a bunch from the community) with bug fixes and improvements in a bunch of areas. LinkedIn Style Theme for the ASP.NET AJAX Tab Container Control: Matt Berseth posts some cool new themes you can use with the ASP.NET AJAX Control Toolkit's tab control. ASP.NET AJAX In-Depth: Object Inheritance : Stephen Walther, author of the recently published ASP.NET 3.5 Unleashed book , posts an incredibly in-depth article about how object inheritance is handled with ASP.NET AJAX. ASP.NET AJAX In-Depth: Creating JavaScript Properties: Stephen Walther continues his series with an in-depth article discussing how JavaScript Properties are handled with ASP.NET AJAX. ASP.NET AJAX In-Depth: Application Events : Yes another Stephen Walther article discussing how application events are handled with ASP.NET AJAX. ASP.NET AJAX Localization Slides and Code: Joel Rumerman has a nice post with samples + slides about how the localization features in ASP.NET AJAX work. JScript Intellisense: working with Ext JS : The VS web tools team enabled JQuery intellisense last month with the VS 2008 Web Development hot fix . In this more recent post they talk about enabling intellisense support for Ext JS (another popular JavaScript framework). VS 2008 Intellisense support for Prototype is coming in the next few weeks. JavaScript Intellisense for the Virtual Earth Map Control: Marc Schweigert is driving a project to add great VS 2008 JavaScript intellisense support for the Virtual Earth Map Control. Check out his video and visit his codeplex project to learn more. ASP.NET MVC ASP.NET MVC Preview 2: Last week at MIX the ASP.NET team shipped a second preview release of the ASP.NET MVC framework. This release has a number of improvements in it (see my earlier MVC roadmap post that covers some of them). Watch the Scott Hanselman videos on the http://www.asp.net/mvc page, as well as the quickstart samples to learn more. Thoughts on ASP.NET MVC Preview 2 and Beyond : Phil Haack from the ASP.NET team has a great post where he talks about the ASP.NET MVC Preview 2 release, as well as some of the features and work that will show up in the next preview drop. One of the major focuses in Preview 3 will be improvements to the testing workflow of controllers. Cheesy Northwind Sample Code: Scott Hanselman has posted a sample application that shows building a simple data driven application using the ASP.NET MVC Framework and the Northwind sample database. Securing Your Controller Actions : Rob Conery shows how to use the new ASP.NET MVC ActionFilterAttribute feature to apply declarative secu | Go |
| My Presentations in Arizona this Tuesday ... Update: You can now download the slides + demos I used during my talks. Click here for the Silverlight Talk . Click here for the MVC Talk .
This week I'm visiting Scottsdale Arizona and will be presenting at a free user group event during the day. I'm presenting two sessions myself:
1) Developing Applications using Silverlight 2 : This will be a drill-down into the new Silverlight 2 Beta1 release, and how you can build applications with it using VS 2008 and Expression Blend. You'll leave this session with a good understanding of the basics of Silverlight programming and how to start building applications with it.
2) Developing Applications using ASP.NET MVC : This session will be a drill-down into the new ASP.NET Model-View-Controller framework option (which last week was updated . You'll leave this session with a good understanding of what it is, how it works, and how to start building ASP.NET web applications with it.
In addition to my sessions above, there will also be great sessions at the event from Microsoft employees on "Consuming Web Services with Microsoft Silverlight", "Encoding Video for Microsoft Silverlight", and "Serving Applications with Microsoft Silverlight Streaming".
You can sign up and attend the sessions for free. Click here for more details on the events, and click here to register online to attend.
Hope to see some of you there,
Scott | Go |
| First Look at Using Expression Blend with Silverlight 2 ... Last week I did a First Look at Silverlight 2 post that talked about the upcoming Silverlight 2 Beta1 release. In the post I linked to some end-to-end tutorials I've written that walk through some of the fundamental programming concepts behind Silverlight and WPF, and demonstrate how to use them to build a "Digg Search Client" application using Silverlight:
Part 1: Creating "Hello World" with Silverlight 2 and VS 2008
Part 2: Using Layout Management
Part 3: Using Networking to Retrieve Data and Populate a DataGrid
Part 4: Using Style Elements to Better Encapsulate Look and Feel
Part 5: Using the ListBox and DataBinding to Display List Data
Part 6: Using User Controls to Implement Master/Details Scenarios
Part 7: Using Templates to Customize Control Look and Feel
Part 8: Creating a Digg Desktop Version of our Application using WPF
In this first set of Silverlight tutorials I didn't use a visual design tool to build the UI, and instead focused on showing the underlying XAML UI markup (which I think helps to explain the core programming concepts better). Now that we've finished covering the basics - let's explore some of the tools we can use to be even more productive.
Expression Blend Support for Silverlight
In addition to releasing the upcoming Beta1 of Silverlight 2, we are also going to ship Visual Studio 2008 and Expression Studio tool support for targeting it. These tools will offer a ton of power for building RIA solutions, and are designed to enable developers and designers to easily work on projects together.
In today's post I'm going to introduce some of the features in the upcoming Expression Blend 2.5 March preview. After demonstrating some of the basics of how Blend works, we are going to use it to build a cross-platform, cross-browser Silverlight IM chat client:
The above screen-shot shows what the application looks like at runtime on a Mac. Below is a screen-shot of what it looks like at design-time within Expression Blend:
We'll use Expression Blend to graphically construct all of the UI for the application, as well as use it to cleanly data-bind the UI to .NET classes that represent our chat session and chat messages.
<Download Code> Click here to download a completed version of this sample. </Download Code>
All of the controls we'll use to build the chat application are built into Beta1 of Silverlight 2.
Disclaimer: I am not a designer (nor am I cool)
Let me say up front that I am a developer and not a designer. I'm also not very cool. While I understand the techniques to create UI, I sometimes choose bad colors and fonts when putting it together (only after I did all the screen-shots for this post did a co-worker helpfully point out that there is actually a site dedicated to banning some of the fonts and colors I used . Ouch).
For those of you with artistic skill out there - please be gentle with me and focus your attention on the features and techniques I demonstrate below, rather than on the font and color choices I use. :-)
Getting Started: Creating a new Silverlight 2 Project
Expression Blend and Visual Studio 2008 share the same solution/project file format, which means that you can create a new Silverlight project in VS 2008 and then open it in Expression Blend, or you can create a new Silverlight project in Expression Blend and open it in VS. You can also have both Expression Blend and VS 2008 open and editing the same project as the same time.
Since in my previous Silverlight tutorial series I already showed how to create a new Silverlight project using VS 2008, let's use this post to show how to create a new Silverlight application using Expression Blend. To do this, simply choose File->New Project in Expression Blend, select the "Silverlight 2 Application" icon, and click ok:
This will create a new (VS-compatible) solution file and Silverlight application project:
Blend includes a full WYSIWYG designer for Silverlight 2 appli | Go |
| First Look at Silverlight 2 ... Last September we shipped Silverlight 1.0 for Mac and Windows , and announced our plans to deliver Silverlight on Linux. Silverlight 1.0 focused on enabling rich media scenarios in a browser, and supports a JavaScript/AJAX programming model.
We are shortly going to release the first public beta of Silverlight 2, which will be a major update of Silverlight that focuses on enabling Rich Internet Application (RIA) development. This is the first of several blog posts I'll be doing over the weeks and months ahead that talk in more depth about it.
Cross Platform / Cross Browser .NET Development
Silverlight 2 includes a cross-platform, cross-browser version of the .NET Framework, and enables a rich .NET development platform that runs in the browser. Developers can write Silverlight applications using any .NET language (including VB, C#, JavaScript, IronPython and IronRuby). We will ship Visual Studio 2008 and Expression Studio tool support that enables great developer / designer workflow and integration when building Silverlight applications.
This upcoming Beta1 release of Silverlight 2 provides a rich set of features for RIA application development. These include:
WPF UI Framework : Silverlight 2 includes a rich WPF-based 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. This upcoming Beta1 release includes core form controls (TextBox, CheckBox, RadioButton, 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). The built-in 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). Beta1 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 also 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.
Silverlight 2 does not require the .NET Framework to be installed on a computer in order to run. The Silverlight setup download includes everything necessary to enable all the above features (and more we'll be talking about shortly) on a vanilla Mac OSX or Windows machine.
The Beta1 release of Silverlight 2 is 4.3MB in size, and takes 4-10 seconds to install on a machine that doesn't already have it. Once Silverlight 2 is installed you can browse the Web and automatically run rich Silverlight applications within your browser of choice (IE, FireFox, Safari, etc).
Silverlight 2 Tutorials: Building A Simple Digg Client
To help people come up to speed with Silverlight 2, I wrote a Silverlight application and put to | Go |
| .NET 3.5 Client Product Roadmap ... A few months ago I did a .NET Web Product Roadmap blog post where I outlined some of the product plans we have to build on top of the web development features we’ve shipped with Visual Studio 2008 and .NET 3.5. Over the next few months we will also be releasing a number of enhancements specific to client development as well. We have put a lot of effort into addressing some of the biggest areas of customer feedback, while also trying to really push the envelope on the capabilities developers have when building Windows applications. All of these improvements build on top of VS 2008 and .NET 3.5, and will make .NET client development even better going forward. Below is a roadmap of some of the upcoming releases we have planned for the months ahead: Improved .NET Framework Setup for Client Applications One of the biggest asks we’ve had over the years from customers and ISVs building client applications is to make the setup and installation of the .NET Framework easier and faster. This summer we are going to ship a new setup framework for .NET that makes it easier to build optimized setup packages for client applications. This setup framework can be integrated with existing installation frameworks (for example: products like InstallShield), and enables a smaller and faster end-user setup experience of the .NET Framework. Windows Forms and WPF client applications will be able to use this setup framework to cleanly “bootstrap” getting the .NET Framework installed onto machines. The setup “bootstrap” utility will support automatically downloading the minimal set of .NET Framework packages needed to enable .NET 3.5 client applications on a machine. For example, if a user already has .NET 2.0 installed on their machine, setup will be smart enough to automatically download only the upgrade patches necessary to update .NET 2.0 to 3.5 (and not have to re-download the components already provided by .NET 2.0). This will significantly shrink the payload size of client setup programs, and speed up the installation experience. We’ll also be delivering improvements that enable a more integrated application install experience for both MSI and ClickOnce based solutions, and support a more consumer friendly user experience that is easy to build. Improved Working Set and Startup Improvements for .NET Client Applications One of the other common asks we receive is to enable .NET client applications to launch faster in “cold startup” scenarios. “Cold startup” scenarios occur when no other .NET client applications are running (or have recently run) on a machine, and require the OS to load lots of pages (code, static data, registry, etc) from disk. If you are loading a large .NET client application or library, or are using a slow disk, these cold startup scenarios can require many seconds for your application to start. This summer we are going to ship a servicing update to the CLR that makes some significant internal optimizations in how we optimize our data structures to cut down on disk IO and improve memory layout when loading and running applications. Among many other benefits, this work will significantly improve the working set and cold startup performance of .NET 2.0, 3.0 and 3.5 applications and will dramatically improve end-user experiences with .NET-based client applications. Depending on the size of the application, we expect .NET applications to realize a cold startup performance improvement of between 25-40%. Applications do not need to change any code, nor be recompiled, in order to take advantage of these improvements so the benefits are automatic. WPF Performance Improvements This summer we are also planning to release a servicing update to WPF that includes a bunch of performance optimizations that improve its text, graphics, media and data stack. These include: - Moving the DropShadow and Blur bitmap effects, which are currently software rendered, to be hardware acc | Go |
| ASP.net.com Community Links |
| File Upload control in C# as a friendly web user control. Easy upload, delete, and view options ... Web User control written in C# using VS2005 to allow file upload, delete, and view option. Easy property settings, makes it easier for developers to use. | Go |
| ASP.NET MVC Framework – Part 2: Testing ... In this article Simone will cover one of the main reasons for adopting the ASP.NET MVC framework: testability. | Go |
| Create Control Extenders ... Learn how to create Control Extenders using Visual Studio 2008, ASP.NET 3.5, and AJAX. | Go |
| GridView with Expandable/Collapsable Rows ... Using C# and Javascript to show gridview rows with expanded and collapse features. Allows parent/child view while providing easy navigation of child details using client side script. | Go |
| Design Custom Editor for a Property ... In the previous article we discussed type converters. Type converters come handy when you want to accept property values in plain text form. However, at times you may not want to allow the user to enter text values directly. You may want to present a custom value picker in the form of a dropdown control or a dialog box. This is possible with the help of Type Editors and this article examines them with an example. | Go |
| ASP.NET MVC ... Is the new MVC pattern right for you?
ASP.NET MVC Preview 2 provides Model-View-Controller routing and testing improvements as well as the first Visual Studio 2008 template support for MVC development in the IDE and Dynamic Data enhancements. | Go |
| Virtual Earth Meets SQL Server 2008 and ASP.NET AJAX ... In this tutorial we'll analyze Microsoft Virtual Earth, the new SQL Server 2008 GEOGRAPHY data type and ASP.NET AJAX. We'll build a database of longitude and latitude records for specific locations, we'll then use ASP.NET AJAX and Virtual Earth to exploit these locations. | Go |
| ASP.NET AJAX Best Practices ... This article demonstrates AJAX best practices based on ASP.NET AJAX. | Go |
| Sorting a GridView bound to Custom Data Object ... This article presents a technique for sorting a GridView populated from a list of custom data objects. It relies on the ViewState and does not require additional calls to the database. | Go |
| GridView Tips and Tricks using ASP.NET 2.0 ... The article discusses ten tips and tricks that you can use while using the GridView control. | Go |
| CodeProject.com ASP Links |
| Sorting and Paging of an Generic GridView ... How to implement sorting and paging of an generic gridview | Go |
| Manage ASP.Net Web Server Controls, Event Handler and Server Side Validation using XML and XSLT ... An article on Managing ASP.Net Web Server Controls, Event Handler and Server Side Validation using XML and XSLT | Go |
| Keyword Matching RSS Reader Control ... Display RSS results that contain specific keywords. | Go |
| A New Generation of URL Rewriters ? ... A URL Rewriter/ Redirector which utilizes new and advanced IIS7 Integrated ASP.NET Pipeline feature | Go |
| ASP.NET Session Helper (scope, categories) ... Use scopes and categories to avoid collision and confusion between you session values | Go |
| Summary Links User Control for Microsoft Office SharePoint Server (MOSS) ... Displays a summary list of page links for a sub-site | Go |
| A Naive String Comparer ... A class to perform a "naive" comparison of two chunks of text to see if they look to be the same. | Go |
| ASP.NET 3.5 Extensions Preview - AJAX History Management ... Storing ajax history points and navigating using the browser's back and forward buttons | Go |
| Schemaless C#-XML data binding with VTD-XML ... Agile, efficient XML data binding without schema | Go |
| using Xaml in app.config and web.config ... a continuation of using xaml for configuring applications | Go |
| Web Aplication State ... This article explains how to maintain the web application state. | Go |
| Site Map Web Part for Microsoft Office SharePoint Server (MOSS) ... Displays the site structure in a hierarchical tree that is expandable and collapsible | Go |
| Google's static map API WebControl ... Show you how to build an image based WebControl displaying static maps with markers | Go |
| GNU GPL for dummies ... Synopsis of GPL v3 discussed in simple terms | Go |
| DotNetSlackers.com Links |
| The dark side of static members ... Often we find it easy to create a class with a static event to keep the controls in our web application loosely coupled. The easiest way to make a number of controls interact without "knowing" about each other is to have a static event distributor class.
public class EventDistributor
{
public static event EventHandler SomethingHappened;
public static void RaiseSomethingHappened(object sender, EventArgs e)
{
if (SomethingHappened != null)
{
SomethingHappened(sender, e);
}
}
}
Some of the controls raise the events of the distributor.
protected void Button1_Click(object sender, EventArgs e)
{
.
EventDistributor.RaiseSomethingHappened(sender, e);
.
}
.and others subscribe to them
protected void Page_Load(object sender, EventArgs e)
{
EventDistributor.SomethingHappened += new EventHandler(EventDistributor_SomethingHappened);
.
}
The problem
Let's say we add an IScriptControl (e.g. from the RadControls for ASP.NET AJAX suite) in the control tree inside the event handler of the static event. After postback we get an InvalidOperationException with the message "Script controls may not be registered after PreRender".
The reason
To find the reason for the error we need to know that static classes and members are alive until the application is restarted. They are not destroyed after the page lifecycle completes. So what happens? A control subscribes to the event of the event distributor in the Page_Load handler. After the postback the event is raised and the control's event handler method from the first request gets executed. The life cycle of that previous page was already executed and adding a RadControl to the Controls tree will throw the aforementioned exception. This exception is thrown by the ScriptManager control which cannot register script controls after the Prerender event of the Page object.
There is one more problem here - the event distributor holds a reference to the user control and thus it cannot be garbage collected. This leads to a memory leak on the server.
The solution
What we need to do is guarantee that the event distributor does not keep a reference to our object. This can be done easily by detaching the event handler in a later stage of the page lifecycle. Still, this is not the best approach. As the static members are alive as long as the application is, it is possible that concurrent requests to the same page execute simultaneously. This will raise the event twice for both page instances and will execute their event handler methods twice. We can avoid that by making sure our class is page-specific. We can create a singleton static class, which is stored in the Items collection of the Page object and use it. The singleton will be destroyed when the page gets destroyed, so we even do not need the code to remove the event handler.
I'm attaching a demo project to this post. It contains two folders - one of them contains a page, demonstrating the problem and the other contains the suggested solution.
P.S. Tess Ferrandez , Microsoft Escalation Engineer describes another drawback of using static members.
Cheers,
Erjan
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 Session Helper (scope, categories) ... Use scopes and categories to avoid collision and confusion between you session values... 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 few issues installing MVC release 4/16/2008 ... Are you already tied of hearing ASP.NET MVC? Microsoft first open source is getting lots of blogging time for the reason that they are adding lots of value for us to decide how would you like to code, instead of going to another Open Source initiative. And that believe it or not is a good thing. I downloaded and install the VS template package with the version 4/16/2008 In a clean computer, Still I received the error below. Having said that the install said successfully. After creating... 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 |
| New ASP.NET AJAX Web Site - Kleenex.com ... We just launched the site earlier this week. It uses ASP.NET AJAX as well as jQuery for the dynamic UI used throughout the site.Kleenex.com ... 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 |
| MVC coding in VB ... Don't ask why, but I decided to try to use the porridge that was "just right" in VB while trying to create a site using the new ASP.NET MVC framework . As I will no doubt forget the syntax to use in about 42 seconds, I'm including it here. Others may find it useful as well.
ActionLinks :
<%=Html.ActionLink(Of ViewEngines.CategoryController) _ (Function(c As ViewEngines.CategoryController) c.Add(), _ "Add Category")%>
Form definition :
<% Using Html.Form(Of ViewEngines.CategoryController) _ (Function(c As ViewEngines.CategoryController) c.Update(ViewData.CategoryID), _ FormMethod.Post)%>
The Function(c as ViewEngines.CategoryController) c.blah syntax is the equivalent syntax to the shorter, more symbolrific C# syntax: c => c.Add() .
That was still giving me an error. What I found (see below) was that the trick seems to be to change your methods into functions (instead of the Subs that I was using), and it would work:
Public Function Update(ByVal id As Integer) As Object Dim c As New Category() c.LoadByKey(id) c.LoadFromPost() c.Save() RedirectToAction("List") Return Nothing End Function
Now someone can please tell me I'm wrong, and there is a simpler solution. Barring that, I think I might stick with using the "less correct " versions of the calls (or, more likely, using C# for all my MVC sites)
(Special thanks to Chuwanga on the asp.net forums for the original solution . I wouldn't have figured out that last step) 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 MVC Preview of a Preview ... Its no secret that Microsoft can get better at naming non RTM (Release to Manufacturing) releases. We have terms like CTP, Preview, Alpha, Beta, RC (Release Candidate), and so on. On the other hand, at least Microsoft does try to move things along to RTM rather than keeping products in perpetual Beta. With ASP.NET MVC, we also need to add yet another type of release. For now Ive been calling this a CodePlex Source Release meaning its simply sharing source code that is in progress. ScottGu called... 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 MVC Source Refresh Preview ... We recently opened up a new ASP.NET CodePlex Project that we will be using to provide previews (with buildable source code) for several upcoming ASP.NET features and releases. Last month we used it to publish the first drop of the ASP.NET MVC source code. This first drop included the source for the ASP.NET MVC Preview 2 release that we shipped at MIX, along with Visual Studio project files to enable you to patch and build it yourself. A few hours ago we published a refresh of the 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 |
| ASP.NET MVC Framework - new build available - source includes unit tests ... Just today, the MVC Framework team dropped the soure code refresh on its CodePlex workspace. This includes a big controller base class refactoring along with other enhancements. A big deal, also, is that the source code drop now includes the unit tests! That's awesome. Great job Levi, Eilon, Phil and Rob!! Now we have some work to do to upgrade MvcContrib and CodeCampServer to the new drop. :-) The biggest deal is that controllers and actions are now more DRY and... 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`s Membership, Roles, and Profile - Part 10 ... The Membership system automatically tracks the last
date and time each user's account has been accessed. With the SqlMembershipProvider , this information is
stored in the aspnet_Users database table in a datetime column named LastActivityDate . This
column is automatically updated to the current UTC date and time whenever a user
logs into the site, whenever their user account information is updated, and whenever their user account information is retrieved.
In addition to tracking each user's last activity date and time, the Membership system includes a method named
GetNumberOfUsersOnline .
This method returns the number of users whose last activity date and time is within a specified window; by default, this method returns the number of
users whose aspnet_Users.LastActivityDate value falls within the last 15 minutes.
This article, the tenth installment of a multipart article series on ASP.NET's Membership, Roles, and Profile systems, examines
the GetNumberOfUsersOnline method and see how to extend the Membership system to include additional user
activity information. Specifically, we will add a new table to the database used by the SqlMembershipProvider that associates a description
of each user's current action. We will then update our ASP.NET pages to update the records in this table to include a description of the user's
current action. For example, when visiting the home page we may use the description, "Viewing the home page." Finally, we will create a web page that displays
the list of currently logged on users and their last known action. 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`s Membership, Roles, and Profile - Part 10 ... The Membership system automatically tracks the last
date and time each user's account has been accessed. With the SqlMembershipProvider, this information is
stored in the aspnet_Users database table in a datetime column named LastActivityDate. This
column is automatically updated to the current UTC date and time whenever a user
logs into the site, whenever their user account information is updated, and whenever their user account information is retrieved.
In addition to tracking each user's last... 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 |
| Action behavior using ASP.NET MVC and MvcContrib ... This post is a quick rundown of action method behaviors. This will be halfway obsolete with the next MVC drop on codeplex, but here goes: You can download MvcContrib from http://mvccontrib.org. The convention controller is there. The ConventionController takes away nothing from System.Web.Mvc.Controller, but it adds some useful things on top. My example controllers inherit from ConventionController. First, To get an action method to fire and run, just make it public. ... 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 |
| Stephen Forte joins Telerik ... It's a great pleasure to announce thatStephen Forte will be joining Telerik as Chief Strategy Officer.
A bit of background for the people who don't know who Stephen is: he is a long-time Microsoft MVP (13 years!),dasBlog founding contributor,Microsoft Regional Director for NYC, former CTO of Zagat , one of the greatest speakers in the world, and above all, a remarkable person for whom I've always had great respect.
In his new role Stephen will be helping Telerik to choose the right path and ensure that you, our customers, are always in the center of our product strategy.
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 |
| Directory Browsing in ASP.Net 2.0 ... An article on browsing via directories or HTTP, with ASP.NET using Tree View 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 |
| Scott Guthrie talking about Silverlight at the MS CC ... Just Wow.Posted from http://weblogs.asp.net/albertpascual... 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: 2008.04.19 ... .NET A New Generation of URL Rewriters ? Mp3Sharp - Decode MP3 Files natively in .NET using a Managed application written in C# A fluent repeater Debug Pimp up your debugger: Creating a custom workspace for windbg debugging Link Interesting Finds: April 18, 2008 | Go |
| Thoughts about Web2.0 ... Web2.0 is one of the biggest buzzwords out there, but what exactly does it mean? It's changing the face of the Internet. As we are web developers we must have a good knowledge about this important and branching web trend. I navigated some web sites here and their and made simple presentation to introduce the essential concepts of Web2.0 and I add some slides about Wb2.0 from design perspective. There are three basic parts of Web2.0 -according to Andi Gutmans-which will determin if you web application or website is a Web2.0 one or not which is: RIA: so you are giving the user a rich experience while using you application. Users add value: your web application is social active with the users so users are not watching or retrieving information they participate and add new values to you web application and it's content using various techniques. Services not System: web application is a group of services not a common system "SOA" Web2.0 is generating real questions about the future of the common web applications,: Are we still need to develop customized web applications? Are their is an easy way to convert a common web application into a Web2.0 one, for example a simple ordering system could it be made in a Web2.0 flavor. If I created my web application and included some parts of Web2.0 essentials and discard others is it a Web2.0 application? Is "Users add value" concept is a must in a Web2.0 application or we can exclude common web applications? And their is more and more questions .... hope to have good answers someday.... I hope that these slides is easy and clear enough to have a good idea about Web2.0 trend. I tried as I can to summarize the main concepts and ideas in this big and mysterious term. Hope that's Help, Huthaifa You can get those slides in attachments down there: | Go |
| إصدارة أولية من ASP.NET Dynamic Data أصبحت متوفرة ... قبل بضعة أشهر قمنا بإصدارامتدادات العرض لـ ASP.Net 3.5 التي احتوت مجموعة من المزايا الجديدة التي سوف يتم إصداراها فيما بعد خلال هذه السنة (تطويرات على ASP.NET AJAX ،ASP.NET MVC،دعم لـASP.NET SilverLight، و ASP.NET Dynamic Data ) الـدعم ASP.NET Dynamic Data خلال الإصدارة الأولية تلكقد قدمت نظرة أولية إلى ميزات رائعة وجديدة تسمح لك ببناء المواقع المعتمدة على البيانات Data driven بسرعة، والتي تعمل باستخدام كائنات LINQ to SQL و LINQ to Entities. إن ASP.NET Dynamic Data support يسمح بشكل اتوماتيكي بإنشاء صفحات كاملة المهام لإدخال البيانات وإصدارا التقارير بالاعتماد على معلوماتك الابتدائية -meta data- عن مقاربة الكائنات إلى العلاقات ORM أي -Object Relation mapping-. بالإضافة إلى دعم إنشاء الصفحات بشكل ديناميكي ، فإنها تسمح لك بشكل اختياري أن تقوم بتجاهل أو تخصيص قوالب العرض الجاهزة باستخدام الـ HTML أو باستخدام شيفرة (أي أنه يمكنة أن تتحكم بشكل كامل بالمحتويات التي تود عرضها). ASP.NET Dynamic Data Preview اليوم قمنا بإصدار إصدارة محدثة من الـ ASP.NET Dynamic Data Preview ويمكنك أن تتعلم المزيد عنها وتقوم بتحميلها باتباع هذه الوصلة إن هذه الإصدارة من الـ ASP.NET Dynamic Data Preview يعمل بالاعتماد على كائنات البيانات المدمجة في الـ ASP.NET مثل تفاصيل العرض DetailsView ،وشبكة البيانات GridView وقائمة البيانات Listview ... الخ. إن الدعم البيانات بشكل ديناميكي يسمح لهذه الكائنات أن تتعامل مع علاقات المفاتيح الخارجية foreign-key. فمثلاً باستعمال شبكة البيانات GridView سوف تحصل على اسم سهل لعرض أعمدة اللمفاتيح الخارجية كما وستحصل على قائمة منسدلة ليتم اختيار القيم من خلالها في حالة التعديل: إن دعم البيانات الديناميكي الجديد يقدم أيضاً تصديق-Validation- لواجهة للمستخدم UI بشكل اتوماتيكي بالاعتماد على التصديق على جهة المستخدم وعلى جهة الخادم بناء على التقييدات التي تقوم ببناءها في نموذج دوّال البيانات. فمثلاً إذا كان هناك عمود في قاعة البيانات حجمه محدود بخمسين رمز أو حرف ، كما أنه لا يمكن أن يكون فارغاً ، فستقوم ASP.NET dynamic data باستعمال كائن تصديق مناسب في واجهة المستخدم لتجبر الواجهة على تطيق التقييد أيضاً. وإذا قمت بتغيير التقييد خلال دوّال الـ LINQ to SQL أو خلال دوّال الـ LINQ to Entities فإن واحهة المستخدم UI ستقوم باستقبل هذه التغييرات بشكل اتوماتيكي وتتقوم بتطبيق هذه التقييدات على أي طلب الويب جديد. بالإضافة إلى معلومات النموذج الابتدائية الأساسية يمكنك أن تقوم بتعريف معلومات ابتدائية مخصصة لتتحكم بالتصديق والشكل الأساسي لعناصر واجهة المستخدم . يمكنك تطبيق كل هذه الميزات السابقة باستخدام الـ LINQ to SQL أو باستخدام الـ LINQ to Entities . Visual Studio Dynamic Data Project Wizard بالإضافة إلى دعم ASP.NET dynamic data runtime فإنالـ فريق أدوات الويب في VS قام بشحن مساعد أول إصدارة تجريبة من مساعد الـ ASP.NET dynamic data project والذي يمكنك من بناء المواقع المعتمدة على البيانات بسرعة. إن المساعد يمكنك من اختيار قاعدة البيانات ومن ثم اختيار الجداول والمناظر Views والعمليات المخزنة في قاعدة البيانات مما يسمح لك ببناء نموذج بيانات الـ LINQ to SQL: وبعد إنشاء نموذج البيانات يقوم المساعد وبشكل سهل باختيار قوالب الصفحات المعتمد على البيانات ليستعملها في بناء واجهة المستخدم : ويمكنك بعد ذلك أن تقوم بتعديل نوع عمليات الإدخال، التعديل والتحديث المستخدمة في كل صفحة من واجهة مستخدم: وعندما تنقر على إنهاء فإن المساعد سيقوم بتنصيب المشروع مع دوال نموذج البيات وصفحات واجهة المستخدم، يمكنك تعلم المزيد عن هذا ابلمساعد بمشاهدة عمله في هذا العمود في هذه المدونة هنا كيف تبدأ: يمكن البدء بالتعلم حول الإصدارة الجديدة من dynamic data preview وتقوم بتشغيله من خلال هذه الوصلة ، ويمكنك مشاهد عرض الـ dynamic data في مؤتمر MIX08 الذي قام David Ebbo's بإعداده لتتعلم المزيد عن كيفية عمله. كما ويمكنك أن تتفقد عرض الشاشة الذي قدمهScott Hunter's هنا وعرض Brad Millington's هنا أيضاً ، وهنا عمود آخر لـ David يتحدث فيه التغييرات التي تم إحداثها بين إصدارة شهر ديسمبر وإصدارة اليوم. يمكنك إرسال اسئلة ومراجعاتكم عبر منتدياتwww.asp.net على هذه المشاركة هنا ، أتمنى أن أكون قد أفدتكم Scott يمكنكم الاطلاع على النسخة الأصلية من هذه المشاركة بتاريخ: يوم الخميس 4/10/2008 10:45 AM على هذه الوصلة | Go |
| patterns & practices WCF 3.5 Security Guidelines Now Available ... " For this week's release in our patterns & practices WCF Security Guidance project , we released our first version of our WCF 3.5 Security Guidelines . Each guideline is a nugget of what to do, why, and how. The goal of the guideline format is to take a lot of information, compress it down, and turn insight into action. The downside is that it's tough to create prescriptive guidelines that are generic enough to be reusable, but specific enough to be helpful. The upside is that customers find the guidelines help them cut through a lot of information and take action. We contextualize the guidelines as much as we can, but ultimately you're in the best position to do the pattern matching to find which guidelines are relevant for your scenarios, and how you need to tailor them. Here's a snapshot of the guidelines, but you can see our security guidelines explained at our WCF Security Guidance project site. Categories Our WCF Security guidelines are organized using the following buckets: Auditing and Logging Authentication Authorization Binding Configuration Management Exception Management Hosting Impersonation and Delegation Input/Data Validation Proxy Considerations Deployment considerations Auditing and Logging Use WCF auditing to audit your service If non-repudiation is important, consider setting SuppressAuditFailure property to false Use message logging to log operations on your service Instrument for user management events Instrument for significant business operations Protect log files from unauthorized access Do not log sensitive information Authentication Know your authentication options Use Windows Authentication when you can If you support non-WCF clients using windows authentication and message security, consider using the Kerberos direct option If your users are in AD, but you can’t use windows authentication, consider using username authentication If your clients have certificates, consider using client certificate authentication If you need to streamline certificate distribution to your clients for message encryption, consider using the negotiate credentials option If your users are in a custom store, consider using username authentication with a custom validator If your users are in a SQL membership store, use the SQL Membership Provider If your partner applications need to be authenticated when calling WCF services, use client certificate authentication. If you are using username authentication, use SQL Server Membership Provider instead of custom authentication If you need to support intermediaries and a variety of transports between client and service, use message security to protect credentials If you are using username authentication, validate user login information Do not store passwords directly in the user store Enforce strong passwords Protect access to your credential store If you are using Windows Forms to connect to WCF, do not cache credentials Authorization If you use ASP.NET roles, use the ASP.NET Role Provider If you use windows groups for authorization, use ASP.NET Role Provider with AspNetWindowsTokenRoleProvider If you store role information in SQL, consider using the SQL Server Role Provider for roles authorization If you store role information in Windows Groups, consider using the WCF PrincipalPermissionAttribute class for roles authorization If you need to authorize access to WCF operations, use declarative authorization If you need to perform fine-grained authorization based on business logic, use imperative authorization Binding If you need to support clients over the internet, consider using wsHttpBinding. If you need to expose your WCF service to legacy clients as an ASMX web service, use basicHttpBinding If you need to support remote WCF clients within an intranet, consider using netTcpBinding. If you need to support local WCF clients, consider using netNamedPipeBinding. If you need to support disconnected queued calls, use netMsmqBinding. If you need to | Go |
| New Article: Self Sorting GridView with LINQ Expression Trees ... I just got finished writing one of the most exciting articles I've ever written. The concept is simple, but the code is fairly advanced, so if you're looking to get into some heavy LINQ code, then please check it out: www.singingeels.com/Articles/Self_Sorting_GridView_with_LINQ_Expression_Trees.aspx
Also, we're looking for new authors. So if you're an experienced developer who is looking to advance your career by contributing to the development community, we welcome you to write an original article on Eels. Check out the rules and regulations page of course first.
Like always, feel free to post your (constructive) comments on Eels, or you can post them here. | Go |
| Daily Dilbert Updated ... I've updated my Dilbert Image Service to handle the redesign of the Dilbert.com site that broke it today. It's nice to have a portal with good content, but it's better to have a portal with a today's Dilbert comic! Nothing brings users to your portal like Dilbert . I hope you enjoy the updated service. | Go |
| ASP.NET MVC - ActionResult... The Good & Not So Bad ... I'm thoroughly enjoying the new ActionResult feature the ASP.NET team introduced into the "refresh" of the Preview 2 bits... or whatever they're calling it now :) Introducing this has increased productivity regarding testing the results of a controller's action. Here's a quick summary of the different types... Read More | Go |
| Secret Server on the Treo 700 ... Secret Server has supported a "Mobile Edition" for over a year now but it is always tricky making sure that it works correctly on all devices. Our approach was to bake mobile support into the base product (ASP.NET based) so it simply scales down to the capability of the device. That sounds simple but unfortunately it depends on making sure that functionality will work with all the limitations of various devices. My own favorite BlackBerry 8820 does a reasonable job of helping me get to the password I need in those emergency but it is hardly a pleasant browsing experience. In fairness, no browsing on it is particularly pleasant since it is mostly slow, struggles with most layouts and has a small screen. That said, I love it dearly and browsing has never been a core requirement for me since email, contacts and calendar are definitely my most essential. Today we had a customer ask about the Treo 700 so I tried out the emulator from the Palm website. It seems to work fine with Secret Server and I was able to browse around and access passwords. Do your web applications support mobile devices and if so how do you test them? Jonathan Cogley is the CEO and founder of Thycotic Software, a .NET consulting company and ISV in Washington DC. Our product, Secret Server is a enterprise password manager system for teams to secure their passwords. Is your team still storing passwords in Excel? | Go |
| Preventing the Deleted Users from logging to your site ... while working with Forms Authentication and Membership services , if the user selects " remember me " check box in the login dialog ,the runtime will create a persistent authentication cookie for him, the persisted cookie is responsible to keep the user logged in for a specified period(even he closed his browser) ,and the default period is 30 minutes in .Net 2.0 or later , and you can change it to some value lets say 50 minutes as follows :
in web.config file :
<authentication mode="Forms"> <forms timeout="50"></forms> </authentication>
Now the problem comes if the administrator deleted the user from the Membership users , the user still authenticated and can access your site !
to override this behavior , you need to check the user existence upon request , and redirect the user to login page if he is not exists ,
to accomplish this , you can use HttpModule that intercept the user request .
the following are the HttpModule :
Public Class checkUser Implements IHttpModule
Public Sub Dispose() Implements System.Web.IHttpModule.Dispose
End Sub
Public Sub Init(ByVal context As System.Web.HttpApplication) Implements System.Web.IHttpModule.Init AddHandler context.AuthenticateRequest, AddressOf OnAuthenticateRequest End Sub
Sub OnAuthenticateRequest(ByVal sener As Object, ByVal e As EventArgs) Dim context As HttpContext = HttpContext.Current Dim response As HttpResponse = HttpContext.Current.Response
If context.User.Identity.AuthenticationType = "Forms" AndAlso Membership.GetUser(context.User.Identity.Name) Is Nothing Then FormsAuthentication.SignOut() context.RewritePath("~/login.aspx") End If
End Sub
End Class
and you need to register it in web.config file as follows:
<httpModules> <add name="checkUserStatus" type="checkUser"/> </httpModules>
Of course this solution will slow your website , because it will add one extra database call for every request ...
Regards,
Anas Ghanem | Go |
| Why BSODs Make People Think You Are In Afghanistan ... Hi my name is Craig . It’s been a while, I know...
Computer problems are really not a lot of fun. Right after I
got back from my vacation my computer took a dive – sending my productivity into
a tail spin. After having my machine rebuilt and then dealing with some fun BSODs
I seem to be finally back in business.
One listener was even asking if I got sent to Afghanistan . :)
There is still a lot to share and I want to let you know
about what is coming up.
For pixel8 I just released a show today where I interview
Markus Egger on his experiences building Xiine , a service-oriented WPF document
reader. Markus started working with WPF when it was in the early stages and has
some good insight on how to approach a project like this. (Also, if you are interested Markus is looking for some talent to add to his team .)
Further - look for shows coming soon with interviews with Jesse
James Garrett , Dr. WPF , John Gossman and Josh Smith . I also still have a
backlog of MIX content so I will be highlighting some of that as well.
For the Polymorphic Podcast , the next show (due out shortly)
is dedicated to ASP.NET MVP resources. There is a lot of great
information out there, but I will try to give you a snapshot of some of the
best articles, tutorials and posts that will help you with your MVC
development. | Go |
