I am using Visual Studio 2010 , if I use update panels , and do some changes in Markups , then in designer.cs System.UI is converted to System.Web.Webparts, Which force me to changes all "designer.cs" files.
Has anyone else experienced this and are there any solutions?
Seems to be a VS2010 bug in some releases. They do believe it's fixed now. Check this, will probably help: VS10-KB981167-x86.exe
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