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can u tell wht the error is... i am not able to see the attachmnet
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This is my main page in which I have collapisible panel and my phone gridview is contained in it. 
 
I am getting duplicate component id error ( screen shots at the end).First time on click it opens 
with modal popup correctly. But when I tried to cancel (hide the popup) it gives two components with 
same id error. 
 
Microsoft JScript runtime error: Sys InvalidOperationException: Two 
components with same id. 'ct100_ContentPlaceHolder1_ucopsphone_mdlPopupPhone can't be added to the application. 
 
I tried setting ScriptMode=”release” 
the duplicate component error goes away but the modal up shows up more than 1 instance of the popup.During 
first popup only one is shows and during subsequent it keeps on adding modal popups. (second click it has 
2 and so on). 
 
My requirements. 
1. &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;to get rid of these errors 
2. &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;to close the modal popup on cancel which is contained with in the &lt;edititemtemplate&gt; of formview 
modal popup. 
 
Main GridView User Control Page. 
------------------------------- 
 
&lt;%@ Page Title=&quot;&quot; Language=&quot;C#&quot; MasterPageFile=&quot;~/MasterPages/basemaster.master&quot; %&gt; 
&lt;%@ Register Assembly=&quot;AjaxControlToolkit&quot; Namespace=&quot;AjaxControlToolkit&quot; TagPrefix=&quot;asp&quot; %&gt; 
&lt;%@ Register TagPrefix=&quot;ucophone&quot; TagName=&quot;ucopsphone&quot; Src=&quot;~/UserControls/online_app_phone_gv.ascx&quot; %&gt; 
&lt;asp:Content ID=&quot;Content1&quot; ContentPlaceHolderID=&quot;ContentPlaceHolder1&quot; Runat=&quot;Server&quot;&gt; 
&lt;div&gt; 
&nbsp; &nbsp; &lt;asp:UpdatePanel ID=&quot;UpdatePanel1&quot; runat=&quot;server&quot;&gt; 
&nbsp; &nbsp; &nbsp; &nbsp;&lt;ContentTemplate&gt; 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;asp:CollapsiblePanelExtender 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;ID=&quot;CollapsiblePanelExtenderPhone&quot; runat=&quot;server&quot; &nbsp; 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;TargetControlID=&quot;PanelContentPhone&quot; 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;SuppressPostBack=&quot;True&quot; &gt; 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/asp:CollapsiblePanelExtender&gt; 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;asp:Panel ID=&quot;PanelContentPhone&quot; runat=&quot;server&quot; CssClass=&quot;collapsePanel&quot;&gt; 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;div style=&quot;margin-left:65px;&quot;&gt; 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;ucophone:ucopsphone id=&quot;ucopsphone&quot; runat=&quot;server&quot; /&gt; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/div&gt; 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/asp:Panel&gt; &nbsp; &nbsp; &nbsp; 
&nbsp; &nbsp; &nbsp; &nbsp;&lt;/ContentTemplate&gt; 
&nbsp; &nbsp; &nbsp;&lt;/asp:UpdatePanel&gt; 
&nbsp; &lt;/div&gt; 
&nbsp; &lt;/asp:Content&gt; 
 
 
Gridview UserControl(ascx) which contains modalpopup 
 
&lt;%@ Control Language=&quot;C#&quot; ClassName=&quot;online_app_phone_gv&quot; %&gt; 
&lt;%@ Register Assembly=&quot;AjaxControlToolkit&quot; Namespace=&quot;AjaxControlToolkit&quot; TagPrefix=&quot;asp&quot; %&gt; 
&lt;%@ import Namespace=&quot;Oracle.DataAccess.Client&quot; %&gt; 
&lt;%@ import Namespace=&quot;Oracle.DataAccess.Types&quot; %&gt; 
 
&lt;script runat=&quot;server&quot;&gt; 
 
&nbsp; &nbsp; &nbsp;protected void GridViewAppPhone_RowCommand(object sender, GridViewCommandEventArgs e) 
&nbsp; &nbsp; &nbsp;{ 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;switch (e.CommandName) 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;{ 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;case (&quot;Insert&quot;): 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;doEditViewPhone(strkey1, strkey2, &quot;Insert&quot;); 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;break; 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;case (&quot;View&quot;): 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;doEditViewPhone(strkey1, strkey2, &quot;View&quot;); 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;break; 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;case (&quot;Select&quot;): 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;doEditViewPhone(strkey1, strkey2, &quot;Select&quot;); 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;break; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;default: 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;break; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;} 
&nbsp; &nbsp; &nbsp;} 
&nbsp; 
&nbsp; &nbsp; &nbsp;protected void FormViewOnlinePhone_ItemCommand(object sender, FormViewCommandEventArgs e) 
&nbsp; &nbsp; &nbsp;{ 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;FormViewRow row = FormViewOnlinePhone.Row; 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;if (e.CommandName == &quot;Update&quot;) 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;{ 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; // call update procedure 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;} 
 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;if (e.CommandName == &quot;Insert&quot;) 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;{ 
 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; // call insert procedure 
 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;} 
 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;if (e.CommandName == &quot;Cancel&quot;) 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;{ 
 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;// Hide Popup 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;} 
&nbsp; &nbsp; &nbsp;} &nbsp; &nbsp; 
&lt;/script&gt; &nbsp; 
&lt;script type=&quot;text/javascript&quot;&gt; 
&nbsp; &nbsp; function cancelClick() 
&nbsp; &nbsp; { 
&nbsp; &nbsp; &nbsp; this._popup = $find('mdlPopup'); 
&nbsp; &nbsp; &nbsp; this._popup.hide(); 
&nbsp; &nbsp; } 
&lt;/script&gt; 
&lt;asp:UpdatePanel id=&quot;updPnlPhoneList&quot; runat=&quot;server&quot; UpdateMode=&quot;Conditional&quot;&gt; 
&nbsp; &nbsp; &lt;ContentTemplate&gt; 
&nbsp; &nbsp; &nbsp; &nbsp;&lt;asp:GridView ID=&quot;GridViewAppPhone&quot; runat=&quot;server&quot; &nbsp;&gt; 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;asp:TemplateField ShowHeader=&quot;false&quot; HeaderText=&quot;Commands&quot;&gt; 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;ItemTemplate&gt; 
&lt;asp:LinkButton id=&quot;btnViewPhoneDetails&quot; CommandName=&quot;View&quot; CommandArgument=&quot;&lt;%# ((GridViewRow) Container).RowIndex %&gt;&quot; Text=”Edit&quot; &nbsp;CausesValidation=&quot;False&quot; runat=&quot;server&quot; ToolTip=&quot;View Record&quot;&gt;&lt;/asp:LinkButton&gt; 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;/ItemTemplate&gt; 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;/asp:TemplateField&gt; &nbsp; 
&nbsp; &nbsp; &nbsp; &nbsp;&lt;/asp:GridView&gt; 
&nbsp; &nbsp; &nbsp; &nbsp;&lt;asp:SqlDataSource ID=&quot;SqlDataSourcePhone&quot; runat=&quot;server &lt;/asp:SqlDataSource&gt; 
&nbsp; &lt;/ContentTemplate&gt; 
&nbsp;&lt;/asp:UpdatePanel&gt; 
&nbsp; 
 
&nbsp;&lt;asp:Panel ID=&quot;pnlPopupPhone&quot; runat=&quot;server&quot; CssClass=&quot;modalPopupBackground&quot;&gt; 
&nbsp; &nbsp; &nbsp;&lt;asp:UpdatePanel ID=&quot;updPnlPhoneDetail&quot; runat=&quot;server&quot; &nbsp; UpdateMode=&quot;Conditional&quot; 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ChildrenAsTriggers=&quot;true&quot;&gt; 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;ContentTemplate&gt; 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;asp:Button ID=&quot;btnShowPopupPhone&quot; runat=&quot;server&quot; style=&quot;display:none&quot; 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;usesubmitbehavior=&quot;false&quot; /&gt; 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;asp:ModalPopupExtender ID=&quot;mdlPopupPhone&quot; runat=&quot;server&quot; 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;PopupControlID=&quot;pnlPopupPhone&quot; 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;TargetControlID=&quot;btnShowPopupPhone&quot; 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;Enabled=&quot;True&quot;&gt; 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;/asp:ModalPopupExtender&gt; 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;asp:FormView ID=&quot;FormViewOnlinePhone&quot; runat=&quot;server&quot; 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; DataSourceID=&quot;ObjectDataSource1&quot; 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; DefaultMode=&quot;Edit&quot; OnItemCommand=&quot;FormViewOnlinePhone_ItemCommand&quot;&gt; &nbsp; 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;EditItemTemplate&gt; 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;div style=&quot; text-align:right;width:400px;&quot;&gt; 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&lt;asp:LinkButton ID=&quot;LinkButton1&quot; runat=&quot;server&quot; usesubmitbehavior=&quot;false&quot; &nbsp; 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;CausesValidation=&quot;True&quot; &nbsp;CommandName=&quot;Update&quot; Text=&quot;Update&quot; /&gt;&amp;nbsp; 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;asp:LinkButton ID=&quot;LinkButton2&quot; runat=&quot;server&quot; &nbsp; CausesValidation=&quot;False&quot; 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;CommandName=&quot;Cancel&quot; Text=&quot;Cancel&quot; usesubmitbehavior=&quot;false&quot; /&gt; 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&lt;/div&gt; &nbsp; &nbsp; &nbsp; 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;/EditItemTemplate&gt; 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;/asp:FormView&gt; 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &lt;/ContentTemplate&gt; &nbsp; &nbsp; &nbsp; 
&nbsp; &nbsp; &nbsp;&lt;/asp:UpdatePanel&gt; 
&nbsp; &nbsp; &nbsp;&lt;div style=&quot; text-align:right;width:420px;&quot;&gt; 
&nbsp; &nbsp; &nbsp; &nbsp; &lt;asp:Button ID=&quot;btnClose&quot; styel=”display:none;&quot; runat=&quot;server&quot; 
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; CausesValidation=&quot;False&quot; &nbsp;Text=&quot;Cancel&quot; usesubmitbehavior=&quot;false” /&gt; 
&nbsp; &nbsp; &nbsp; &lt;/div&gt; &nbsp; &nbsp; 
&lt;/asp:Panel&gt; 
&lt;asp:TextBox id=&quot;txtAppId&quot; Text=&quot;&quot; runat=&quot;server&quot; Visible 

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Are u calling the user control twice in the page
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<div class="content wysiwyg-content">
Modal Popup Extender Error 
<a href="https://filedb.experts-exchange.com/incoming/2010/09_w37/346940/Page-Title.doc" target="_blank" class="file-inline" title="ASp Code (252 KB)"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path d="M67.508 468.467c-58.005-58.013-58.016-151.92 0-209.943l225.011-225.04c44.643-44.645 117.279-44.645 161.92 0 44.743 44.749 44.753 117.186 0 161.944l-189.465 189.49c-31.41 31.413-82.518 31.412-113.926.001-31.479-31.482-31.49-82.453 0-113.944L311.51 110.491c4.687-4.687 12.286-4.687 16.972 0l16.967 16.971c4.685 4.686 4.685 12.283 0 16.969L184.983 304.917c-12.724 12.724-12.73 33.328 0 46.058 12.696 12.697 33.356 12.699 46.054-.001l189.465-189.489c25.987-25.989 25.994-68.06.001-94.056-25.931-25.934-68.119-25.932-94.049 0l-225.01 225.039c-39.249 39.252-39.258 102.795-.001 142.057 39.285 39.29 102.885 39.287 142.162-.028A739446.174 739446.174 0 0 1 439.497 238.49c4.686-4.687 12.282-4.684 16.969.004l16.967 16.971c4.685 4.686 4.689 12.279.004 16.965a755654.128 755654.128 0 0 0-195.881 195.996c-58.034 58.092-152.004 58.093-210.048.041z"/></svg>Page-Title.doc</a>
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Page-Title.doc

asp modal popup extender duplicate component id error

The successor to Active Server Pages, ASP.NET websites utilize the .NET framework to produce dynamic, data and content-driven web applications and services. ASP.NET code can be written using any .NET supported language. As of 2009, ASP.NET can also apply the Model-View-Controller (MVC) pattern to web applications