private void SetSourceFromXaml(BitmapImage brush, string xaml)
{
try
{
var fe = XamlReader.Load(xaml) as FrameworkElement;
fe.Measure(new Size(double.PositiveInfinity, double.PositiveInfinity));
fe.Arrange(new Rect(0, 0, fe.DesiredSize.Width, fe.DesiredSize.Height));
WriteableBitmap bmp = new WriteableBitmap(fe, null);
var stream = bmp.SaveAsPng();
brush.SetSource(stream);
}
catch
{
}
}