How we dynamically load the user control at run time on the aspx page [duplicate]

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Possible Duplicate:

Create a usercontrol instance programmatically in ASP.NET

Dear Friend i have the user control and i what to load the user control on the click of the button?

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First create the panel or anything server control

<asp:Panel ID="plnExam" runat="server">
 </asp:Panel> 

then after on cs page

Control uc = this.LoadControl("~/UserControl/CollegesInExam.ascx");

plnExam.Controls.Add(uc);

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Try this. (The google phrase you're looking for is "dynamically loading user control")

The key part is Control FeaturedProductUserControl = LoadControl("YourControl.ascx")

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This is in case you will want to load the UserControls via Ajax. Maybe that can be useful:

    public static string GetControlHtml(string controlLocation)
    {
        Page page = new Page();
        UserControl userControl = (UserControl)page.LoadControl(controlLocation);

        //Disabled ViewState- If required
        //userControl.EnableViewState = false;

        HtmlForm form = new HtmlForm();
        form.Controls.Add(userControl);
        page.Controls.Add(form);
        StringWriter textWriter = new StringWriter();
        HttpContext.Current.Server.Execute(page, textWriter, false);
        return CleanHtml(textWriter.ToString());
    }

The controlLocation is the path from the UserControl (e.g. "~/UserControls/NewUser.ascx"). This method renders the UserControl and returns its HTML ready to be loaded into a contaner (div) via Ajax.