private void BookingListView_SelectedIndexChanged(object sender, EventArgs e)
 {
     if (bookingListView.SelectedItems.Count > 0)
     {
         currentBooking = bookingController.Find(Convert.ToInt32(bookingListView.SelectedItems[0].Text));
         DisplayDetails(currentBooking);
         if (myState == "view")
         {
             deleteButton.Enabled = true;
         }
     }
 }