protected void ddlProductLine_SelectedIndexChanged(object sender, EventArgs e)
 {
     if (ddlProductLine.SelectedValue != "")
     {
         if (hdnsearch.Value == "")
         {
             objCommonClass.BindProduct(ddlProduct, int.Parse(ddlProductLine.SelectedValue.ToString()));
         }
     }
     else
     {
         ddlProduct.Items.Clear();
         ddlProduct.Items.Insert(0, new ListItem("Select", "0"));
     }
 }