Error Rendering Control Visual Web Developer
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UWP (Windows 10) UI for iOS UI for Android UI for Windows Universal UI for Windows Phone PRODUCTIVITY & QUALITY JustCode JustMock Testing Framework Debugging Fiddler JustDecompile JustTrace Reporting error creating control failed to create designer & Data Access Reporting Report Server Data Access DEPLOYMENT Modulus Mobile App Development Telerik Platform AppBuilder Analytics Backend Services Testing Test Studio Mobile Testing API Testing Digital Content & Experience Progress Sitefinity CMS Progress Sitefinity Digital Experience Cloud ENTERPRISE FREE TRIALS PRICING SUPPORT & LEARNING ABOUT US YOUR ACCOUNT Search Your Account Telerik Platform Telerik Forums error creating control telerik / UI for ASP.NET AJAX Forum / Grid / Error Rendering Control - Designtime Cancel The title field is required! UI for ASP.NET AJAX Resources Buy Try Feed for this thread 4 posts, 0 answers Gary 1 posts Member since: Apr 2011 Posted 14 Sep 2011 Link to this post I have a ASP.NET site which we are upgrading from.net framework 3.5 to 4.0 and everything seems to be working fine. I also upgraded from telerik dll from 2010.2.929.20 to 2011.1.315.40. The only problem that I am having is the telerik controls placed in User Control which then placed on aspx page is not rendering in Visual Studio 2010. The user controls is displayed as error - System.NotSupportedException:Specified method is not supported at System.Web.UI.Design.UserControlDesign.Dummy.RootDesigner.DummyWebFormsReferenceManager.RegisterTahPrefix(Type objectType) at ....(please see complete error in attached file) I removed the old reference of telerik dlls and added them back again with the new dll.. Versions : - Visual Studio 2010 Professional - Telerik Control - 2011.1.315.40 - .net framework 4.0 Please advise. Thanks. userControlError1.png Andrey Admin 836 posts Posted
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