ASP.NET show ModalPopupExtender from Buttons created in Code-Behind

Question

Hi I have a modalPopupExtender in my aspx web page pointing to a Panel and in Code-Behind I create buttons which I want them to show the modalPopup, so I have:

buttonX.OnClientClick = "javascript:$get(" + modalPopup.ClientID + ").show();";

but instead it just does a PostBack, even if I put "return false;" at the end of the past code.

Answer 1

I think I have figured something out although I'm not sure it's the best solution.

This is my code-behind:

protected void Page_Load(object sender, EventArgs e)
    {
        Button btn = new Button();
        btn.Text = "Hello World!";
        btn.OnClientClick = "javascript:$get('" + HiddenField.ClientID + "').click(); return false;";
        PanelHello.Controls.Add(btn);
    }

and this is my ASPX page:

<asp:HiddenField ID="HiddenField" runat="server" />
<asp:ModalPopupExtender ID="modalPopup" runat="server" TargetControlID="HiddenField"
    PopupControlID="Panel" DynamicServicePath="" Enabled="True" />
<asp:Panel ID="Panel" runat="server">
    <h1>
        Hello World!</h1>
</asp:Panel>

And this makes the modal pop up without posting back =D!