public int RemovePCSessionRating(int installationNo, int cardNo)
 {
     try
     {
         using (ExCommsSQLDataAccess DataContext = this.GetDataContext())
         {
             return(DataContext.esp_RemovePCSessionRating(cardNo, installationNo));
         }
     }
     catch (Exception ex)
     {
         Log.Exception(ex);
         return(-1);
     }
 }