Save canvas to bitmap

Question

I want to save my canvas to bitmap. I found some examples in internet, but all of those saves only black image (with size of my canvas). What can I do with this?

Co

Answer 1

PAY ATTENTION

if your render is a black image it is because of your incorrect sizing.

this is a good example for you:

RenderTargetBitmap rtb = new RenderTargetBitmap(width, height, mXdpi, mYdpi, System.Windows.Media.PixelFormats.Default);
        rtb.Render(my_canvas);

        BitmapEncoder pngEncoder = new PngBitmapEncoder();
        pngEncoder.Frames.Add(BitmapFrame.Create(rtb));

        using (var fs = System.IO.File.OpenWrite("test.png"))
        {
            pngEncoder.Save(fs);
        }

this code saves a png image from your bitmap that rendered from your canvas.

Hope helps you.