I would like to generate some images dynamicaly. For that, I intend to create a XAML View, populate it with Data (using DataBinding) and then generate an image from the rendering of that view (kind of a screenshot).
Is there a way to do this in Silverligth or WPF?
In WPF:
public static Image GetImage(Visual target)
{
if (target == null)
{
return null; // No visual - no image.
}
var bounds = VisualTreeHelper.GetDescendantBounds(target);
var bitmapHeight = 0;
var bitmapWidth = 0;
if (bounds != Rect.Empty)
{
bitmapHeight = (int)(Math.Floor(bounds.Height) + 1);
bitmapWidth = (int)(Math.Floor(bounds.Width) + 1);
}
const double dpi = 96.0;
var renderBitmap =
new RenderTargetBitmap(bitmapWidth, bitmapHeight, dpi, dpi, PixelFormats.Pbgra32);
var visual = new DrawingVisual();
using (var context = visual.RenderOpen())
{
var brush = new VisualBrush(target);
context.DrawRectangle(brush, null, new Rect(new Point(), bounds.Size));
}
renderBitmap.Render(visual);
return new Image
{
Source = renderBitmap,
Width = bitmapWidth,
Height = bitmapHeight
};
}