// Return MasterTable given Screen ID and DB Column Id.
 public string WrGetMasterTable(string ScreenId, string ColumnId, string dbConnectionString, string dbPassword)
 {
     using (Access3.WebAccess dac = new Access3.WebAccess())
     {
         return(dac.WrGetMasterTable(ScreenId, ColumnId, dbConnectionString, dbPassword));
     }
 }