Parameters
- e
- System.Windows.FrameworkElement to render into the document.
- rc
- A rectangle where the element will be rendered.
This method uses a System.Windows.Media.VisualTreeHelper to render each of the primitives that compose the root element. It does not convert the element into a bitmap. As a result, the output is smaller and resolution independent; however, the result is not as faithful as a bitmap rendering. To render an element as a bitmaps, create a System.Windows.Media.Imaging.WriteableBitmap and pass it to the DrawImage(WriteableBitmap,Rect) method.
This method must be called from the main thread. Calling it from a background thread will raise a cross-thread exception when the method tries to access the properties of the System.Windows.FrameworkElement being rendered.