private void Fly_Opened(object sender, object e)
{
Flyout fly = (Flyout)sender;
EditEffectControl control = (EditEffectControl)fly.Content;
control.Width = ActualWidth - 2;
}
public void ShowEffectPropertyFlyout()
{
EditEffectControl editControl = new EditEffectControl();
editControl.Initialize(Effect);
Flyout fly = new Flyout();
fly.Content = editControl;
fly.Opened += Fly_Opened;
fly.Placement = FlyoutPlacementMode.Left;
fly.ShowAt(this);
}