WPF Polygon to bitmap

问题

How can I convert the wpf polygon shape as a bitmap image? I am trying to send as Visual parameter to change as bitmap, but it doesn't seem to be working. Is there any other way to convert the WPF polygon to bitmap?

am using like below

RenderTargetBitmap RTbmap = new RenderTargetBitmap((int)yellowPolygon.Width, (int)yellowPolygon.Height, 96, 96, PixelFormats.Default);
RTbmap.Render(yellowPolygon); 
image1.Source = RTbmap;

回答1:

Change Width and Height to ActualWidth and ActualHeight.

Line, polygon etc which are defined via points have undefined width and height. When rendering to a bitmap you should use ActualWidth and ActualHeight.

I just tried this in a sample project and it works just fine.

回答2:

use

(int)image1.ActualWidth 

and

(int)image1.ActualHeight

来源：https://stackoverflow.com/questions/3509296/wpf-polygon-to-bitmap