protected void FourStarDropDownButton_Click(object sender, EventArgs e)
 {
     if (Page is IButtonHandling ButtonHandlingInterface)
     {
         ButtonHandlingInterface.DisplayFourStar();
     }
 }
 protected void ThreeStarButton_Click(object sender, EventArgs e)
 {
     if (Page is IButtonHandling ButtonHandlingInterface)
     {
         ButtonHandlingInterface.DisplayThreeStar();
         ButtonHandlingInterface.HideFourStar();
     }
 }