Uwp dispatcher usage

Task.Run(async () =>
{
    await Dispatcher.RunAsync(CoreDispatcherPriority.Normal, async () =>
        {
            ContentDialog dialog = new ContentDialog()
            {
                Title = "Test Dispatcher( test Dispatcher)",
                DefaultButton = ContentDialogButton.Close,
                CloseButtonText = "Close( close )"
            };
            await dialog.ShowAsync();
        });
});

according to CoreDispatcherPriority Enum, Priority is divided into ：
High： High priority . All synchronous requests immediately invoke the delegate . Asynchronous requests are queued and processed before any other request type .
Do not use this priority in your application . It is reserved for system events . Using this priority may result in other messages （ Including system events ） Delayed .
Normal： Normal first . Events are handled in a scheduled order .
Low： Low priority . If there is no higher priority event in the queue , The event is handled .
Idle： Lowest priority . Use this priority for background tasks . When the main thread of the window is idle and there is no pending input in the queue , Can handle delegation .

Sample code

DispatcherDemo.xaml.cs

Reference material

CoreDispatcher Class
CoreDispatcher.RunAsync
CoreDispatcherPriority Enum
Getting the Dispatcher of a Window in UWP