public BlurHelper(CommandBar element)
{
_hostBackdrop = false;
_element = new Grid
{
HorizontalAlignment = HorizontalAlignment.Stretch,
VerticalAlignment = VerticalAlignment.Stretch
};
var background = (element.GetDescendants().First() as Panel);
background.Background = new SolidColorBrush(Color.FromArgb(0x7f, 0, 0, 0));
background.Children.Add(_element);
BlurifyWithHostBackdrop();
}