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Master Detail-Modal Popup Duplicate Component ID error

Posted By:      Posted Date: September 13, 2010    Points: 0   Category :ASP.Net
This is my main page in which I have collapsible panel and my phone gridview is contained in it. The Initial page loads up properly and shows the gridview. All the errors happen when I select a gridview row for modal popup edit. I get the following errors one after other after ignoring each one of them. I have been struggling with his for almost a week. I would appreciate if someone could help me get rid of these errors. Following are the sections of the main page and the code in the gridview ascx control . Main GridView User Control Page.<%@ Page Title="" Language="C#" MasterPageFile="~/MasterPages/basemaster.master" %> <%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="asp" %> <%@ Register TagPrefix="ucophone" TagName="ucopsphone" Src="~/UserControls/online_app_phone_gv.ascx" %> <asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server"> <div> <asp:UpdatePanel ID="UpdatePanel1" runat="server"> <ContentTemplate> <asp:CollapsiblePanelExtender ID="CollapsiblePanelExtenderPhone" runat="server" TargetControlID="PanelContentPhone" Supp

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