[surface] 해당 UserControl만 스크린샷(캡쳐) 하기

private void Snapshot(UIElement source, double scale, int quality)
       {
           double actualHeight = source.RenderSize.Height;
           double actualWidth = source.RenderSize.Width;

           double renderHeight = actualHeight * scale;
           double renderWidth = actualWidth * scale;

           RenderTargetBitmap renderTarget = new RenderTargetBitmap((int)renderWidth, (int)renderHeight, 96, 96, PixelFormats.Pbgra32);
           VisualBrush sourceBrush = new VisualBrush(source);

           DrawingVisual drawingVisual = new DrawingVisual();
           DrawingContext drawingContext = drawingVisual.RenderOpen();

           using (drawingContext)
           {
               //drawingContext.PushTransform(new ScaleTransform(scale, scale));
               drawingContext.DrawRectangle(sourceBrush, null, new Rect(new Point(0, 0), new Point(actualWidth, actualHeight)));
           }
           renderTarget.Render(drawingVisual);

           JpegBitmapEncoder jpgEncoder = new JpegBitmapEncoder();
           jpgEncoder.QualityLevel = quality;
           jpgEncoder.Frames.Add(BitmapFrame.Create(renderTarget));

           using (FileStream stm = File.OpenWrite(@"C:\test2.png"))
               jpgEncoder.Save(stm);
       }

일단 소스는 이렇다 source에 해당 usercontrol을 넣는다.

만약 DrawingVisual에 넣어서 rectangle을 만들지 않으면 해당 유저컨트롤만 찍히는게 아니라 전체가 찍힌다.

전체가 찍히긴하지만 해당 컨트롤만 나옴

참고 :

http://www.grumpydev.com/2009/01/03/taking-wpf-screenshots/