.net - Save screenshot of WPF web browser Frame -

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i have frame element displaying html page in wpf application, , save screenshot of frame image.

with of google, have code:

size size = new size(previewframe.actualwidth, previewframe.actualheight); previewframe.measure(size); previewframe.arrange(new rect(size));  var renderbitmap = new rendertargetbitmap(             (int)size.width,             (int)size.height,             96d,             96d,             pixelformats.pbgra32); renderbitmap.render(previewframe);

but ever blank image.

any thoughts on how fix code, and/or way capture web page image in app?

turns out gdi graphics class has copyfromscreen method works , captures frame's contents:

var topleftcorner = previewframe.pointtoscreen(new system.windows.point(0, 0)); var topleftgdipoint = new system.drawing.point((int)topleftcorner.x, (int)topleftcorner.y); var size = new system.drawing.size((int)previewframe.actualwidth, (int)previewframe.actualheight);  var screenshot = new bitmap((int)previewframe.actualwidth, (int)previewframe.actualheight);  using (var graphics = graphics.fromimage(screenshot)) {     graphics.copyfromscreen(topleftgdipoint, new system.drawing.point(),         size, copypixeloperation.sourcecopy); }  screenshot.save(@"c:\screenshot.png", imageformat.png);

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