protected virtual void OnMouseRightButtonUp(object sender, EventArgs e)
{
var task = Windows.Invoke(() =>
{
var x = default(int);
var y = default(int);
MouseHelper.GetPosition(out x, out y);
DpiHelper.TransformPosition(ref x, ref y);
Menu.HorizontalOffset = x;
Menu.VerticalOffset = y;
Menu.IsOpen = true;
var source = PresentationSource.FromVisual(Menu) as HwndSource;
if (source != null && source.Handle != IntPtr.Zero)
{
SetForegroundWindow(source.Handle);
}
});
}