Some VS 2010 RC Updates (including patches for Intellisense and Web Designer fixes)
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Published: 08 Mar 2010
Unedited - Community Contributed
In this article, Scott provides an outline of a few updates which are releases during the testing phase of Visual Studio 2010. In addition to a patch for Intellisense, he demonstrates how to resolve the web Designer crashes.
by Scott Guthrie
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Republished with Permission - Original Article

[In addition to blogging, I am also now using Twitter for quick updates and to share links. Follow me at:]

We are continuing to make progress on shipping Visual Studio 2010.  I’d like to say a big thank you to everyone who has downloaded and tried out the VS 2010 Release Candidate, and especially to those who have sent us feedback or reported issues with it. This data has been invaluable in helping us find and fix remaining bugs before we ship the final release.

Last month I blogged about a patch we released for the VS 2010 RC that fixed a bad intellisense crash issue.  This past week we released two additional patches that you can download and apply to the VS 2010 RC to immediately fix two other common issues we’ve seen people run into:

Patch that fixes crashes with Tooltip invocation and when hovering over identifiers

The Visual Studio team recently released a second patch that fixes some crashes we’ve seen when tooltips are displayed – most commonly when hovering over an identifier to view a QuickInfo tooltip.

You can learn more about this issue from this blog post, and download and apply the patch here.

Patch that fixes issues with the Web Forms designer not correctly adding controls to the auto-generated designer files

The Visual Web Developer team recently released a patch that fixes issues where web controls are not correctly added to the .designer.cs file associated with the .aspx file – which means they can’t be programmed against in the code-behind file. 

This issue is most commonly described as “controls are not being recognized in the code-behind” or “editing existing .aspx files regenerates the .aspx.designer.(vb or cs) file and controls are now missing” or “I can’t embed controls within the Ajax Control Toolkit TabContainer or the <asp:createuserwizard> control”.

You can learn more about the issue here, and download the patch that fixes it here.

Common Cause of Intellisense and IDE sluggishness on Windows XP, Vista, Win Server 2003/2008 systems

Over the last few months we’ve occasionally seen reports of people seeing tremendous slowness when typing and using intellisense within VS 2010 despite running on decent machines.  It took us awhile to track down the cause – but we have found that the common culprit seems to be that these machines don’t have the latest versions of the UIA (Windows Automation) component installed.

UIA 3 ships with Windows 7, and is a recommended Windows Update patch on XP and Vista (which is why we didn’t see the problem in our tests – since our machines are patched with all recommended updates).  Many systems (especially on XP) don’t automatically install recommended updates, though, and are running with older versions of UIA. This can cause significant performance slow-downs within the VS 2010 editor when large lists are displayed (for example: with intellisense).

If you are running on Windows XP, Vista, or Windows Server 2003 or 2008 and are seeing any performance issues with the editor or IDE, please install the free UIA 3 update that can be downloaded from this page.  If you scroll down the page you’ll find direct links to versions for each OS.

Note that we are making improvements to the final release of VS 2010 so that we don’t have big perf issues when UIA 3 isn’t installed – and we are also adding a message within the IDE that will warn you if you don’t have UIA 3 installed and accessibility is activated.

Improved Text Rendering with WPF 4 and VS 2010

We recently made some nice changes to WPF 4 which improve the text clarity and text crispness over what was in the VS 2010/.NET 4 Release Candidate.  In particular these changes improve scenarios where you have a dark background with light text.

You can learn more about these improvements in this WPF Team blog post.  These changes will be in the final release of VS 2010 and .NET 4.

Hope this helps,


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