1. 用法
2. 原理
3. 存在的坑
   1. OnLoad 上其他坑
   2. 使用 DispatcherTimer 出现窗口冻结
4. 推荐方法

<Window x:Class="ZuindmMbx.MainWindow"xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"xmlns:d="http://schemas.microsoft.com/expression/blend/2008"xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"xmlns:local="clr-namespace:ZuindmMbx"mc:Ignorable="d"Title="MainWindow" Height="350" Width="525"><Grid><ListView ItemsSource="{Binding KatudefZubpobryk}"><ListView.ItemTemplate><DataTemplate><TextBlock Text="{Binding}"></TextBlock></DataTemplate></ListView.ItemTemplate></ListView><Button Content="确定" HorizontalAlignment="Left" Margin="424,292,0,0" VerticalAlignment="Top" Width="75" Click="Button_OnClick"/></Grid>
</Window>public partial class MainWindow : Window{public MainWindow(){InitializeComponent();DataContext = this;}public ObservableCollection<string> KatudefZubpobryk { get; set; } = new ObservableCollection<string>();private void Button_OnClick(object sender, RoutedEventArgs e){for (int i = 0; i < 10; i++){Foo(10);KatudefZubpobryk.Add(i.ToString());}}private void Foo(int n){for (int i = 0; i < n; i++){Foo(n - 1);}}}

        private void Button_OnClick(object sender, RoutedEventArgs e){for (int i = 0; i < 10; i++){Foo(10);KatudefZubpobryk.Add(i.ToString());DoEvents();}}public static void DoEvents(){DispatcherFrame frame = new DispatcherFrame();Dispatcher.CurrentDispatcher.BeginInvoke(DispatcherPriority.Background, new DispatcherOperationCallback(ExitFrame), frame);Dispatcher.PushFrame(frame);}private static Object ExitFrame(Object state){((DispatcherFrame) state).Continue = false;return null;}

        public MainWindow(){InitializeComponent();DataContext = this;Loaded += OnLoaded;}private async void OnLoaded(object sender, RoutedEventArgs e){await Task.Delay(2000);Dispatcher.Invoke(() => { }, DispatcherPriority.Background);}

        private void OnLoaded(object sender, RoutedEventArgs e){Foo(10);Dispatcher.Invoke(() =>{}, DispatcherPriority.Background);}

        public MainWindow(){InitializeComponent();DataContext = this;Loaded += OnLoaded;DispatcherTimer time = new DispatcherTimer();time.Interval = new TimeSpan(0, 0, 1);time.Tick += Time_Tick;time.Start();}private void Time_Tick(object sender, EventArgs e){Foo(10);Dispatcher.Invoke(() => { }, DispatcherPriority.Background);}

        private void Button_OnClick(object sender, RoutedEventArgs e){for (int i = 0; i < 10; i++){Foo(10);KatudefZubpobryk.Add(i.ToString());Dispatcher.Invoke(() => { }, DispatcherPriority.Background);}}

        private async void Button_OnClick(object sender, RoutedEventArgs e){for (int i = 0; i < 10; i++){Foo(10);KatudefZubpobryk.Add(i.ToString());await System.Windows.Threading.Dispatcher.Yield();}}

        <Grid><Grid.Triggers><EventTrigger RoutedEvent="Grid.Loaded"><BeginStoryboard><Storyboard RepeatBehavior="Forever"><DoubleAnimation Storyboard.TargetName="T" Storyboard.TargetProperty="Angle" From="0" To="360" Duration="0:0:1"></DoubleAnimation></Storyboard></BeginStoryboard></EventTrigger></Grid.Triggers><Grid x:Name="G" Background="#565656" Width="200" Height="200" HorizontalAlignment="Center" VerticalAlignment="Center"><Grid.RenderTransform><RotateTransform x:Name="T" CenterX="100" CenterY="100" Angle="0"></RotateTransform></Grid.RenderTransform></Grid></Grid>