private void BtnAddFlight_Click(object sender, EventArgs e)
 {
     try
     {
         string[] res     = tbTimeValue.Text.Replace(" ", "").Split('ч');
         int      hours   = int.Parse(res[0] == "" ? "-1" : res[0]),
                  minutes = int.Parse(res[1].Replace("мин", "") == "" ? "-1" : res[1].Replace("мин", ""));
         if (hours < 0 || hours > 23)
         {
             throw new Exception("В сутках всего 24 часа!");
         }
         if (minutes < 0 || hours > 59)
         {
             throw new Exception("В часе всего 60 минут!");
         }
         bool found = false;
         foreach (PlaneData planeData in planesForContract.GetPanel.Controls)
         {
             if (planeData.Check)
             {
                 foreach (Flight flight in contract.ConnectedFlights)
                 {
                     if (!game.AssignPlaneToContract(planeData.Plane.ID, flight.Number))
                     {
                         MessageBox.Show("Выбранный самолёт не удовлетворяет критериям контракта");
                         return;
                     }
                 }
                 game.SetTimeForContract(flightID, new TimeSpan(hours, minutes, 0));
                 found = true;
             }
         }
         if (!found)
         {
             throw new Exception("Вы не выбрали самолет/самолеты!");
         }
         else
         {
             Close();
             IsSuccessful = true;
         }
     }
     catch (Exception ex)
     {
         MessageBox.Show(ex.Message);
     }
 }