Xamarin.Mac - Show icon/image before Window Title

Question

I am trying to show an image/icon before the title of window, just like in finder. I have used Window.SetTitleWithRepresentedFilename but it just shows a generic icon not that png file I want to show.

Answer 1

public override void WindowDidLoad()
{
    base.WindowDidLoad();

    Window.RepresentedUrl = new NSUrl(Path.GetFullPath("check.png"));
    var btn = Window.StandardWindowButton(NSWindowButton.DocumentIconButton);
    btn.Image = NSImage.ImageNamed("check");
}