The Controls collection cannot be modified because the control contains code blocks (i.e. <% ... %>).
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.AddAt(Int32 index, Control child) +8668018
Telerik.Web.UI.RadAjaxControl.MoveUpdatePanel(Control initiator, Control updated) +133
[HttpException (0x80004005): Please, see whether wrapping the code block, generating the exception, within RadCodeBlock resolves the error.]
Telerik.Web.UI.RadAjaxControl.MoveUpdatePanel(Control initiator, Control updated) +181
Telerik.Web.UI.RadAjaxControl.PerformRender() +375
Telerik.Web.UI.RadAjaxControl.OnPageRender(HtmlTextWriter writer, Control page) +1222
Telerik.Web.UI.RadAjaxControl.RenderPageInAjaxMode(HtmlTextWriter writer, Control page) +95
System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +256
System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +19
System.Web.UI.Page.Render(HtmlTextWriter writer) +29
System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +27
System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +99
System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +25
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1266
最佳答案
你也可以在不使用 telerik 的情况下遇到这个问题，所以更好的解决方案是添加一个
palceholder 而不是 RadCodeBlock 适合所有情况
<asp:PlaceHolder ID="PlaceHolder1"
your script
runat="server"></asp:PlaceHolder>
关于javascript - 无法修改 Controls 集合，因为该控件包含代码块(即 <% ... %>)。Telerik.Web.UI.RadAjaxControl.MoveUpdatePanel，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/22833685/