Question

I am trying to load and display an image using WPF, but it does not work.

public partial class MainWindow : Window
{
    BitmapImage imgsrc;

    public MainWindow()
    {
        InitializeComponent();

        imgsrc = new BitmapImage();
        imgsrc.BeginInit();
        imgsrc.UriSource = new Uri("c.jpg", UriKind.Relative);
        imgsrc.EndInit();
    }

    protected override void OnRender(DrawingContext drawingContext)
    {
         base.OnRender(drawingContext);
         drawingContext.DrawImage(imgsrc, new Rect(10, 10, 100, 100));
    }
}

the c.jpg file is in the project and marked for copy to output.

the applications runs without errors and shows a white empty window

Answer 1

This is a known issue with overriding OnRender() on a Window.

Don’t derive from Window, use FrameworkElement instead, or if you must use Window try setting the background to transparent.