JavaScript-style Alert() function implemented in Windows UWP

App.xaml.cs

sealed partial class App : Application
{
    ...
    private static List<ContentDialog> DialogQueue { get; } = new List<ContentDialog>();

    public static async void Alert(string text)
    {
        var Dialog = new ContentDialog()
        {
            Title = text,
            CloseButtonText = "OK"
            ...
        };
        App.DialogQueue.Add(Dialog);

        // Add event handler for when dialog closed:
        Dialog.Closed += Dialog_Closed;

        if (App.DialogQueue.Count == 1) // Only one in queue
        {
            await Dialog.ShowAsync();
        }
    }
    // Event handler for when dialog closed:
    private static async void Dialog_Closed(ContentDialog sender, ContentDialogClosedEventArgs args)
    {
        App.DialogQueue.Remove(sender);
        if (App.DialogQueue.Count > 0)
        {
            await App.DialogQueue[0].ShowAsync();
        }
    }
}