无法修改控件集合，因为控件包含代码块(即 <% .. %>).泰利里克应用程序

Question

当我将RadScheduler添加到我的项目中时，我收到此错误。我正在使用Visual Studio 2010和RadControls 2011 q2感谢您的帮助

无法修改控件集合，因为控件包含代码块（即 <% ... %>）。

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. 
Exception Details: System.Web.HttpException: The Controls collection cannot be modified because the control contains code blocks (i.e. <% ... %>).
Source Error: 
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
Stack Trace: 

[HttpException (0x80004005): The Controls collection cannot be modified because the control contains code blocks (i.e. <% ... %>).]
   System.Web.UI.ControlCollection.Add(Control child) +8828175
   Telerik.Web.SkinRegistrar.RegisterCssReference(Page _page, Control _control, String _url) +486
    [HttpException (0x80004005): Please, see whether wrapping the code block, generating the exception, within RadCodeBlock resolves the error.]
       Telerik.Web.SkinRegistrar.RegisterCssReference(Page _page, Control _control, String _url) +557
       Telerik.Web.SkinRegistrar.RegisterCssReferences(ISkinnableControl _control) +1563
       Telerik.Web.UI.RadDataBoundControl.RegisterCssReferences() +74
       Telerik.Web.UI.RadDataBoundControl.ControlPreRender() +50
       Telerik.Web.UI.RadDataBoundControl.OnPreRender(EventArgs e) +47
       Telerik.Web.UI.RadScheduler.OnPreRender(EventArgs e) +131
       System.Web.UI.Control.PreRenderRecursiveInternal() +103
       System.Web.UI.Control.PreRenderRecursiveInternal() +175
       System.Web.UI.Control.PreRenderRecursiveInternal() +175
       System.Web.UI.Control.PreRenderRecursiveInternal() +175
       System.Web.UI.Control.PreRenderRecursiveInternal() +175
       System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2496

Answer 1

当存在 <% %> 块时，无法修改控制树。有关其他信息，请查看此帮助主题。