private void ShellViewModelClosing(object sender, CancelEventArgs e)
{
if (entityController.HasChanges())
{
if (entityController.CanSave())
{
bool?result = messageService.ShowQuestion(shellService.ShellView, Resources.SaveChangesQuestion);
if (result == true)
{
if (!entityController.Save())
{
e.Cancel = true;
}
}
else if (result == null)
{
e.Cancel = true;
}
}
else
{
e.Cancel = !messageService.ShowYesNoQuestion(shellService.ShellView, Resources.LoseChangesQuestion);
}
}
}