Good morning,
I've cerated a new solution in framework 4.0 where i have a page withis code ( see belowe):
<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="ajaxToolkit" %>
<asp:Content ID="Content1" ContentPlaceHolderID="head" runat="server">
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" runat="server">
<ajaxToolkit:ToolkitScriptManager runat="server" id="ToolkitScriptManager2"></ajaxToolkit:ToolkitScriptManager>
<asp:HiddenField ID="hidForModel" runat="server" />
<ajaxToolkit:ModalPopupExtender ID="ModalPopupExtender2" runat="server" TargetControlID="hidForModel"
PopupControlID="pnlpopup" CancelControlID="btnCancel" BackgroundCs ...
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