private void ViewOnClosing(object sender, CancelEventArgs cancelEventArgs)
{
if (!TryClosing())
{
cancelEventArgs.Cancel = true;
return;
}
cancelEventArgs.Cancel = false;
Closing();
View.Closing -= ViewOnClosing;
View.ViewModel = null;
ViewModelManager.Deregister(this);
foreach (var win in View.OwnedWindows)
{
var view = win as View;
view?.Close();
}
View = null;
isClosing = true;
}