Generating a QR code image in a C#/WPF program

Question

I am working on a project where I want to be able to display a QR Code on the screen to the user.

I'm using the QR Code generate from http://qrcodenet.codeplex.com/ which is working fine but I've only found a way to write the QR Code to a file which is now what I want.

Instead, I want the image to be displayed in a control on the WPF window but I don't want to create the file and then set the source of the image to an image control of the newly created file. This seems like a bit of overkill so I'm hoping there is way I can put the stream straight into an image control instead of into a file.

Below is the code that I have so far.

private void generateQRCode()
        {
            QrEncoder encoder = new QrEncoder(ErrorCorrectionLevel.M);
            QrCode qrCode;
            encoder.TryEncode("Test", out qrCode);

            DrawingBrushRenderer dRenderer = new DrawingBrushRenderer(
                new FixedModuleSize(2, QuietZoneModules.Two), System.Windows.Media.Brushes.Black, 
                    System.Windows.Media.Brushes.White);

            DrawingBrush dBrush = dRenderer.DrawBrush(qrCode.Matrix);
            System.Windows.Shapes.Rectangle rect = new System.Windows.Shapes.Rectangle();
            rect.Width = 150;
            rect.Height = 150;
            rect.Fill = dBrush;

            MemoryStream ms = new MemoryStream();
            dRenderer.WriteToStream(qrCode.Matrix, ImageFormatEnum.PNG, ms, new System.Windows.Point(96, 96));

            var image = new System.Drawing.Bitmap(System.Drawing.Image.FromStream(ms), new System.Drawing.Size(new System.Drawing.Point(200, 200)));

            image.Save("myImage.png", System.Drawing.Imaging.ImageFormat.Png);
               
        }

Basically, I want to replace the image.save() function so that the image is instead show directly in a control on my apps GUI, not written to a separate file.

Answer 1

I've actually never written anything in WPF, so this could be wrong, but you probably want to do something like this. I'll copy the answer from that question below:

using(MemoryStream memory = new MemoryStream())
{
    image.Save(memory, ImageFormat.Png);
    memory.Position = 0;
    BitmapImage bitmapImage = new BitmapImage();
    bitmapImage.BeginInit();
    bitmapImage.StreamSource = memory;
    bitmapImage.CacheOption = BitmapCacheOption.OnLoad;
    bitmapImage.EndInit();
}

Then, I assume, you can associate that BitmapImage with whatever control you use to display the image.