public async void SaveEntity(object sender, RoutedEventArgs e)
{
SelectedItem.Name = TextAirplaneName.Text;
SelectedItem.AirplaneType = AirplaneTypeDtos
.FirstOrDefault(airplaneType => airplaneType.Model == TextAirplaneName.Text);
SelectedItem.DateOfIssue = DateTime.Parse(TextDateOfIssue.Text);
SelectedItem.LifeTime = TimeSpan.Parse(TextLifeTime.Text);
var id = SelectedItem.Id;
SelectedItem.Id = Guid.NewGuid();
await _airplaneService.UpdateEntityAsync(id.ToString(), SelectedItem);
TextId.IsReadOnly = false;
SaveButton.Visibility = Visibility.Collapsed;
await LoadAirplaneAsync();
}
