asp ModalPopupExtender load a complet new website?

I will use the ModalPopupExtender, I downloaded it and tried a little bit.

How can I show a comple开发者_Go百科t new ASP-Page and not only a Panel?

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You can put an <iframe> element inside your panel, load the other page inside that frame and extend the panel with your ModalPopupExtender as usual:

<asp:Panel ID="yourPanel" runat="server">
    <iframe src="yourOtherPage.aspx"></iframe>
</asp:Panel>
<asp:LinkButton ID="yourPopupButton" runat=server />
<ajaxToolkit:ModalPopupExtender ID="yourModalPopup" runat="server"
    TargetControlID="yourPopupButton" PopupControlID="yourPanel" />