Create Instances of ASP.Net User Controls Programmatically

Example of how to create ASP.Net user control programmatically.

private ASP.Spinner Spinner1

protected void Page_Load(object sender, EventArgs e)
{
   Spinner1 = (ASP.Spinner)LoadControl("~/Controls/Spinner.ascx");
   PlaceHolder1.Controls.Add(Spinner1);
}