private void Button_Click(object sender, RoutedEventArgs e)
{
if (win2 == null)
{
win2 = new Window2();
win2.Owner = this;
win2.Show();
win2.Closing += OnCloseEvent;
}
}
private void Button_Click(object sender, RoutedEventArgs e)
{
if(win2 == null)
{
win2 = new Window2();
win2.Owner = this;
win2.Show();
win2.Closing += OnCloseEvent;
}
}
private void OnCloseEvent(object sender, EventArgs args)
{
win2.Closing -= OnCloseEvent;
win2 = null;
}
private void OnCloseEvent(object sender, EventArgs args)
{
win2.Closing -= OnCloseEvent;
win2 = null;
}