/// <summary>
/// Occurs when the items collection changes.
/// </summary>
protected virtual async Task CollectionChangedAsync(NotifyCollectionChangedEventArgs e)
{
if (renderHandle.IsInitialized)
{
if (renderHandle.Dispatcher.CheckAccess())
{
RenderItems();
}
else
{
await renderHandle.Dispatcher.InvokeAsync(RenderItems);
}
}
await CollectionChanged.InvokeAsync(e);
}