The GradientButton button behavior

The GradientButton implements the IButtonControl and IPostBackEventHandler interfaces so it follows the same server event model as an ASP.NET Button control.

    this.GradientButton1.Click += new EventHandler(GradientButton1_Click);
}

void GradientButton1_Click(object sender, EventArgs e)
{
   throw new Exception("The method or operation is not implemented.");
}