/// <summary>
/// Handles the unloaded event.
/// </summary>
/// <param name="sender">The sender.</param>
/// <param name="e">The <see cref="EventArgs"/> instance containing the event data.</param>
protected virtual void HandleUnloadedEvent(object sender, EventArgs e)
{
if (ElementDispatcher == null)
{
return;
}
ElementDispatcher.InvokeShutdown();
RemoveLogicalChild(Host);
RemoveVisualChild(Host);
ElementDispatcher = null;
Element = null;
}
public Task InvokeAsync(DispatcherPriority priority, Action action)
{
if (action == null)
{
return(Task.CompletedTask);
}
if (ElementDispatcher == null || ElementDispatcher.HasShutdownStarted || ElementDispatcher.HasShutdownFinished)
{
return(Task.CompletedTask);
}
if (Thread.CurrentThread != ElementDispatcher?.Thread)
{
return(ElementDispatcher?.BeginInvoke(action, priority).Task);
}
action?.Invoke();
return(Task.CompletedTask);
}
