TechEd Bloggers Developer Tools and Languages

Silverlight DataGrid Tip on Keeping Selected Row Fous State

Tim Heuer — Fri, 05 Feb 2010 01:09:34 GMT

Tim Heuer writes, "The scenario is the classic master-details scenario where perhaps you have a grid of data and when a user selects the row, the details are enabled in a form (or perhaps the child of the element) for editing. Maybe something like this..." more

Fri, 05 Feb 2010 01:09:34 GMT

Code Sample and Instructions WPF 4: Button Controls

Pete Brown — Fri, 05 Feb 2010 00:58:02 GMT

Pete Brown writes, "...one of the roadblocks folks new to WPF often hit: templating of controls. If you’re used to Windows Forms or even ASP.NET, where purpose-built controls exist for the common scenarios, doing something as simple as creating a flat image button can be somewhat daunting..." more

Fri, 05 Feb 2010 00:58:02 GMT

Fix to Allow an Encoder Fallback with UTF8

Nicholas Allen — Thu, 04 Feb 2010 18:27:31 GMT

Nicholas Allen writes, "The original code for the WCF text encoder didn't preserve the configured fallback when the character set was UTF8. The UTF8 encoding web name was special cased as part of an optimization. Since the default encoder fallback implementation was an exception fallback, an exception would always be thrown for unconvertible characters regardless of the fallback implementation configured. After installing this fix you're able to customize the fallback..." more

Thu, 04 Feb 2010 18:27:31 GMT

When to Use Anti-Pattern or Code Smell

Peter Ritchie — Thu, 04 Feb 2010 17:30:25 GMT

Peter Ritchie writes, "...I’ve seen the term Anti-Pattern used in a couple of places lately that describe scenarios where patterns are used incorrectly. Each and every pattern has a time and a place (a context). Outside of that context, it is not an anti-pattern. The term Code Smell is much better to describe inappropriate uses of patterns. For example..." more

Thu, 04 Feb 2010 17:30:25 GMT

Silverlight Code to Control the Out-of-Browser Window

Pete Brown — Wed, 03 Feb 2010 17:25:31 GMT

Pete Brown writes, "If your Silverlight 4 application is running with Elevated Permissions, you can control a fair number of aspects of the hosting out-of-browser window. You can change the size, location, make it top most, set window state and Activate it. Here’s some simple example code:" more

Wed, 03 Feb 2010 17:25:31 GMT

WCF Fix for Partially Trusted Clients Using Windows Authentication

Nicholas Allen — Wed, 03 Feb 2010 17:17:39 GMT

Nicholas Allen writes, "...A client with restricted permissions may not be allowed to set the UnsafeAuthenticatedConnectionSharing setting. This causes a security exception to be thrown when the setting is accessed, preventing the request from being made. You're encountering this problem if you see the following exception...." more

Wed, 03 Feb 2010 17:17:39 GMT

Hotfix for TypeConverters with en-US Machines - Customized Cultures

Rob Relyea — Wed, 03 Feb 2010 17:05:43 GMT

Rob Relyea writes, "...XAML has a major problem in v3...When you start the application, an exception is thrown by the Extensible Application Markup Language (XAML) parser, and then the application crashes..." more

Wed, 03 Feb 2010 17:05:43 GMT

Code Shows How to Make ASP.NET Contents Accessible to Remote Pages

Bertrand Le Roy — Wed, 03 Feb 2010 00:07:35 GMT

Bertrand Le Roy writes, "I’m going to demonstrate...a technique I prototyped a few months ago to make it very easy to embed an ASP.NET page’s content in another page, even if it’s using another server technology. This of course works cross-domain. The reason why you would do that...this constitutes an extremely simple approach to making your ASP.NET contents accessible to remote pages, no matter what server technology..." more

Wed, 03 Feb 2010 00:07:35 GMT

Code Comparing two Methods of Creating a Full-Size Silverlight Popup

David Anson — Wed, 03 Feb 2010 00:04:29 GMT

David Anson writes, "...it's been my experience that the RootVisual approach is more naturally correct - by which I mean that it tends to be right by virtue of its simplicity and the fact that it hooks up to the right thing. I don't promise that it's the best choice for all scenarios, but I'll suggest that it's worth considering first for most scenarios..." more

Wed, 03 Feb 2010 00:04:29 GMT

How to Move a WPF Window with Custom Chrome

Pete Brown — Tue, 02 Feb 2010 21:27:57 GMT

Pete Brown writes, "...how to move a window in WPF without using the built-in title bar or resorting to user32.dll, so I whipped up this quick sample...We’ll create a simple window with no built-in border or titlebar. We’ll use a border, some shapes and a HeaderedContentControl to provide stand-in titlebar/content areas..." more

Tue, 02 Feb 2010 21:27:57 GMT

WCF Fix Allows Customizing the Status Code when Validation Fails

Nicholas Allen — Tue, 02 Feb 2010 20:42:24 GMT

Nicholas Allen writes, "...If you decide that the user name and password don't pass validation, then you can throw an exception out of the Validate method to reject the client's message. When using the HTTP transport, the error message sent back after the UserNamePasswordValidator has a status code 403 Forbidden. After installing this fix..." more

Tue, 02 Feb 2010 20:42:24 GMT

Developer Build of Silverlight Client for Facebook

Steve Clayton — Thu, 28 Jan 2010 20:38:19 GMT

Steve Clayton writes, "...Silverlight 4 application for Facebook and it’s just been released for anyone to have a play with. You’ll need to install Silverlight 4 and note that this is a developer build so..." more

Thu, 28 Jan 2010 20:38:19 GMT

Testing Coupling ASP.NET Session State With Forms Authentication

Paulo Morgado — Thu, 28 Jan 2010 20:32:18 GMT

Paulo Morgado writes, "...way to couple the lifetime of the ASP.NET session state with the lifetime of Forms Authentication ticket. My idea was to store the session ID in the UserData property of the forms authentication ticket upon logon and retrieve it with a custom session ID manager. The login code would be something like this...this might work, it’s just an intellectual exercise and wasn’t fully tested..." more

Thu, 28 Jan 2010 20:32:18 GMT

Code and Explanation on Extensible Output Caching with ASP.NET 4

Scott Guthrie — Thu, 28 Jan 2010 20:24:26 GMT

Scott Guthrie writes, "...post covers some of the output caching extensibility improvements being made to ASP.NET 4. These can be used by all ASP.NET 4 applications – including those built using both ASP.NET Web Forms and ASP.NET MVC..." more

Thu, 28 Jan 2010 20:24:26 GMT

Sample Code Calling Constructors in Arbitrary Places

Eric Lippert — Thu, 28 Jan 2010 20:19:19 GMT

Eric Lippert writes, "...C# let’s you call another constructor from a given constructor, but only before the body of the calling constructor runs...achieving the desired construction control flow is easy to do without adding the feature, and there's no compelling benefit to adding the feature. No new interesting representational power is added to the language..." more

Thu, 28 Jan 2010 20:19:19 GMT

How to Expose Configuration Information Through MEF?

Glenn Block — Thu, 28 Jan 2010 00:50:03 GMT

Glenn Block writes, "...one of the common questions we hear from customers. In this particular case...recently used information that he wanted to pull from configuration and pipe to a part. He solved the problem by creating a special configuration provider service which he injected into the part to provide the config. The code for the consumer looked like this:" more

Thu, 28 Jan 2010 00:50:03 GMT

Fixing Powershell Busted Resolve-Path Cmdlet

Harry Pierson — Wed, 27 Jan 2010 19:19:41 GMT

Harry Pierson writes, "...I wrote the following function that wraps up access to the error variable so at least I don’t have fragile messy code sprinkled through out my script..." more

Wed, 27 Jan 2010 19:19:41 GMT

WCF Fix for HTTP Startup Hang

Nicholas Allen — Wed, 27 Jan 2010 19:17:38 GMT

Nicholas Allen writes, "...The http.sys driver is configured to automatically start so that it can begin handling requests. On some systems the http.sys driver can get into a configuration that deadlocks on startup. This causes all of the dependent services using the driver to fail to start...workaround for the problem..." more

Wed, 27 Jan 2010 19:17:38 GMT

Workaround for TurboTax 2009 Failed Install Issue with .NET Framework

Aaron Stebner — Wed, 27 Jan 2010 17:02:12 GMT

Aaron Stebner writes, "...Here are some steps I’ve been able to use to narrow down the exact missing files and/or registry keys that cause TurboTax setup to think that the .NET Framework 3.5 SP1 is not correctly installed:..." more

Wed, 27 Jan 2010 17:02:12 GMT

Technical Debate on ASP.NET Web Forms and ASP.NET MVC

Scott Guthrie — Wed, 27 Jan 2010 01:01:26 GMT

Scott Guthrie writes, "You can build great apps with either. You can build bad apps with either. You are not a good or bad developer depending on what you choose. You can be absolutely great or worthless using both...Respect the choices other people make – the choice they have made is also hopefully a good one that works well for them. Keep in mind..." more

Wed, 27 Jan 2010 01:01:26 GMT