Learning Curve…

DevExpress Error – Cannot unregister UpdatePanel…

Posted on: August 23, 2011

If you are using the Dev Express Page control (ASPxPageControl) and receiving the below error :-
“Cannot unregister UpdatePanel with ID ‘UpdatePanel1’ since it was not registered with the ScriptManager. This might occur if the UpdatePanel was removed from the control tree and later added again, which is not supported. Parameter name: updatePanel”
                                                                                                                                                                                                                        In ASPxPageControl , Set  ViewStateMode property to Enabled and EnableHierarchyRecreation to “false” :-

ViewStateMode=”Disabled” and EnableHierarchyRecreation=”false”

Your ASPxPageControl tag should be something like this :-

<dx:ASPxPageControl ID=”ASPxPageControl1″ runat=”server” ActiveTabIndex=”0″ EnableHierarchyRecreation=”false” ClientIDMode=”AutoID” EnableCallBacks=”true” ClientInstanceName=”ASPxPageControl1″ ViewStateMode=”Enabled”>

<TabPages> ………..</TabPages></dx:ASPxPageControl>

This will solve your issue.

Happy Coding!!!

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1 Response to "DevExpress Error – Cannot unregister UpdatePanel…"

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