protected void getCustomersAll()
 {
     try
     {
         List <string> custlist = repository.getCustomerListAll();
         custlist.Insert(0, "All");
         rddlCustomer.DataSource = custlist;
         rddlCustomer.DataBind();
         rddlCustomer.SelectedIndex = 0;
     }
     catch (Exception ex)
     {
         var msg = ex.Message;
         pnlDanger.Visible = true;
         lblDanger.Text    = msg;
     }
 }