private void BindCampus()
 {
     try
     {
         DataTable dtCampus = new DataTable();
         dtCampus = DataAccessManager.FillCampusCreateUserFilter();
         Rddlcampus.DataSource     = dtCampus;
         Rddlcampus.DataTextField  = "CampusName";
         Rddlcampus.DataValueField = "CampusID";
         Rddlcampus.DataBind();
         Rddlcampus.SelectedIndex = 0;
     }
     catch (Exception ex)
     {
     }
 }