Pop up window is not opening from Grid View in the Update Panel.

It's a .Net 3.5 application developed using VS 2010.
I am trying to open a window from  the grid view in update panel but it's not opening.

Please find the attached .aspx source and code behind.

I want to open the pop up window and preserve the update panel control values.
Any suggestions please.

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Manoj PatilSr. Software EngineerCommented:
You can use ajax's ModalPopupExtender..

<cc1:ModalPopupExtender TargetControlID="Button2" BackgroundCssClass="modalBackground"
    CancelControlID="btnMsg" PopupControlID="Panel1" PopupDragHandleControlID="btnMsg"
    ID="ModalPopupExtender2" runat="server">
  <asp:Panel ID="Panel1" runat="server">
  <%--your code of second update panel here--%>

<asp:LinkButton  ID="lblReportNo" runat="server" CommandName="Select" Text='<%# Eval("ID") %>'/>

 protected void GridView1_RowCommand1(object sender, GridViewCommandEventArgs e)
    if (e.CommandName == "Select")

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KavyaVSAuthor Commented:
I added the post back trigger for GridView and it's opening the popup window.

KavyaVSAuthor Commented:
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