/// <summary>
/// Waits for the next layout update event.
/// </summary>
/// <param name="frameworkElement">The framework element.</param>
/// <returns></returns>
public static async Task WaitForLayoutUpdateAsync(this FrameworkElement frameworkElement)
{
await EventAsync.FromEvent <object>(eh => frameworkElement.LayoutUpdated += eh, eh => frameworkElement.LayoutUpdated -= eh);
}
/// <summary>
/// Waits for the element to unload (disconnect from the main object tree).
/// </summary>
public static async Task WaitForUnloadedAsync(this FrameworkElement frameworkElement)
{
await EventAsync.FromRoutedEvent(eh => frameworkElement.Unloaded += eh, eh => frameworkElement.Unloaded -= eh);
}