Get a bitmap image from a Control view

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I wouldn’t call it easy…but the key component is the RenderTargetBitmap, which you can use as follows:

RenderTargetBitmap rtb = new RenderTargetBitmap((int)control.ActualWidth, (int)control.ActualHeight, 96, 96, PixelFormats.Pbgra32);
rtb.Render(control);

Well, that part is easy, now the RTB has the pixels stored internally…but your next step would be putting that in a useful format to place it on the clipboard, and figuring that out can be messy…there are a lot of image related classes that all interact one or another.

Here’s what we use to create a System.Drawing.Image, which i think you should be able to put on the clipboard.

PngBitmapEncoder png = new PngBitmapEncoder();
png.Frames.Add(BitmapFrame.Create(rtb));
MemoryStream stream = new MemoryStream();
png.Save(stream);
Image image = Image.FromStream(stream);

System.Drawing.Image (a forms image) cannot interact directly with the RenderTargetBitmap (a WPF class), so we use a MemoryStream to convert it.

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