Cannot modify the controls collection of a GenericWebPart

[Gordon]

Hi,

Working in VS2008, I have a normal working aspx page with telerik:RadAjaxManager, telerik:RadScriptManager and asp:WebPartManager

Everything works fine until I drop a RadAjaxPanel into a WebZone. Then it blows up with
"Cannot modify the controls collection of a GenericWebPart.  To create a new GenericWebPart, use the WebPartManager.CreateWebPart() method"

Markup is
<asp:WebPartZone ID="WebPartZone5" runat="server">
                    <ZoneTemplate>
                      <telerik:RadAjaxPanel ID="RadAjaxPanel5" runat="server" ></telerik:RadAjaxPanel>
                    </ZoneTemplate>
                </asp:WebPartZone>

UpdatePanels can go in Webpart zones, what is wrong with the Telerik Panel

Thanks and regards

Gordon

[Sebastian]

Hello Gordon,

Unfortunately you are right. This scenario is not supported by our RadAjaxPanel because it is actually a wrapper around the MS UpdatePanel and injects the real update panel on-the-fly, thus modifying the Controls collection of the GenericWebPart which results in the error you get.

I hope that replacing our ajax panel with MS UpdatePanel in this case (which behaves in the same way) is applicable workaround for you. Please excuse us for not being able to provide more elegant solution for this particular situation.

Kind regards,
Sebastian
the Telerik team

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[Rodrigo Rosada]

Hi Sebastian,

I'm development an application with Telerik component. And I have the same problem.

That error doesn't solved? Any idea to solve this problem ?

Tks.

[Maria Ilieva]

Hi Rodrigo,

We made some research on our end in which our development team was actively involved and unfortunately we came to a conclusion that the presented scenario is still not supported with RadAjax. You could see the following help topic where all controls not compatible with ajax are listed:
http://www.telerik.com/help/aspnet-ajax/ajax-controls-not-compatible.html

Accept our apologizes for any incontinence this generic limitation may lead.

Regards,
Maria Ilieva
Telerik

[Rodrigo Rosada]

Hi Maria,

Ok tks for your reply. I looked the list and there aren't have the UserControl in the list.

Do you know if i can use this control in my application?

Tks.

[Rodrigo Rosada]

Hi Maria again,

Do you know if we have another way to use this control in our application.

We need use this control. Any ideia?

Tks.

[Maria Ilieva]

Hello Rodrigo,

User Controls are fully compatible with RadAjax. You could see more information for using UserControls with RadAjax in the topics below:

http://www.telerik.com/help/aspnet-ajax/ajax-user-controls.html


Regards,
Maria Ilieva
Telerik