private void ButtonAdd_Click(object sender, RoutedEventArgs e)
{
if (_vm == null)
{
return;
}
var engine = new EngineViewModel();
AddEngineForm form = new AddEngineForm(OsLocalization.Entity.BtnAdd, engine, _vm.Engines.ToList());
var result = form.ShowDialog();
if (result.HasValue && result.Value == true)
{
_vm.AddEngine(engine);
}
ChangeContext();
}