private async void UpdatePilot()
        {
            try
            {
                var resultItem = await _service.UpdateAsync(SelectedPilot);

                Pilots.Remove(SelectedPilot);
                Pilots.Insert(0, resultItem);
            }
            catch (System.InvalidOperationException ex)
            {
                await _dialogService.ShowMessage(ex.Message, "Error");
            }
        }
        public async Task UpdateAsync(Pilot ob)
        {
            await _pilotService.UpdateAsync(ob);

            await UpdateListAsync();
        }