private void AddTableToCurrentReservation()
 {
     if (SelectedTableFromFreeTables != null)
     {
         SelectedReservedTables.Add(SelectedTableFromFreeTables);
         CurrentFreeTables.Remove(SelectedTableFromFreeTables);
         //UpdateCurrentFreeTables();
         SelectedTableFromFreeTables = null;
     }
 }
 private void UpdateCurrentFreeTables()
 {
     CurrentFreeTables.Clear();
     foreach (var t in SelectedArea.DinnerTables)
     {
         CurrentFreeTables.Add(t);
     }
     if (SelectedReservedTables.Any())
     {
         foreach (var t in SelectedReservedTables)
         {
             CurrentFreeTables.Remove(t);
         }
     }
 }