public string GetTablesUpdate(string tableName, string maxJson)
 {
     string res = "";
     BroadcastRepository _BroadCastRepository = new BroadcastRepository();
     try
     {
         res = _BroadCastRepository.GetTablesUpdate(tableName, maxJson);
     }
     catch (Exception ex)
     {
         res = ex.Message;
     }
     return res;
 }
 public string GetModifiedData()
 {
     string ModifiedData = "";
     BroadcastRepository _BroadCastRepository = new BroadcastRepository();
     try
     {
         ModifiedData = _BroadCastRepository.GetModifiedData();
     }
     catch (Exception ex)
     {
         return ex.Message;
     }
     return ModifiedData;
 }