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[Solved] RadAjaxManager problem.

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Ajax

This is a migrated thread and some comments may be shown as answers.

Miklos asked on 20 Jun 2008, 07:28 PM

Hi,

Here is the scenario I am having trouble with. I have a page with multiple RadAjaxPanels each with its own info. Each panel has a link which opens a RadWindow that contains a form. Once the user hits submit on this form the window closes and calls the OnClientCloseX() javascript function as per the HelpDesk example (muliple functions for each of the panels). Each of the panels have their own codebehind to handle the ajax request which would update their panel data. However the

$find("<%= RadAjaxPanel1.ClientID %>").ajaxRequest(-1);

line causes the error shown on the bottom of the post. If I replace the line with

$find("ctl00_LeftPanel_RadAjaxPanel1").ajaxRequest(-1);

then the panel gets updated using Ajax correctly. This is the code that is generated by the ClientID request. What do I need to change to avoid the error and not have to enter the ID manually for all of the panels. The result is at the bottom of the post.

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) +2108094

            Telerik.Web.UI.RadAjaxControl.MoveUpdatePanel(Control initiator, Control updated) +110

            Telerik.Web.UI.RadAjaxControl.PerformRender() +418

            Telerik.Web.UI.RadAjaxControl.OnPageRender(HtmlTextWriter writer, Control page) +1222

            Telerik.Web.UI.RadAjaxControl.RenderPageInAjaxMode(HtmlTextWriter writer, Control page) +87

            System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +98

            System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +20

            System.Web.UI.Page.Render(HtmlTextWriter writer) +26

            System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +25

            System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +121

            System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +22

            System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2558

[Solved] RadAjaxManager problem.

The Controls collection cannot be modified because the control contains code blocks (i.e. <% ... %>).

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