protected void loadEmployees()
 {
     try
     {
         List <ClsEmployee> emplist = repository.GetListClsEmployees();
         rddlEmployee.DataSource     = emplist;
         rddlEmployee.DataTextField  = "UserName";
         rddlEmployee.DataValueField = "idEmployee";
         rddlEmployee.DataBind();
     }
     catch (Exception ex)
     {
         var msg = ex.Message;
     }
 }