wpf 窗体内容旋转效果 网摘

<Window x:Class="simplewpf.chuangtixuanzzhuan"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="chuangtixuanzzhuan" Height="300" Width="300">
    <Grid Name="rectangle2">
        <Button Content="Button" Height="23" HorizontalAlignment="Left" Margin="29,67,0,0" Name="button2" VerticalAlignment="Top" Width="75" Click="button2_Click" Canvas.Left="21" Canvas.Top="0" />
        <Rectangle Height="71" HorizontalAlignment="Left" Margin="50,207,0,0"  Stroke="Black" VerticalAlignment="Top" Width="101" Fill="#FF967878" />
        <Button Content="Button" Height="23" HorizontalAlignment="Left" Margin="162,67,0,0" Name="button1" VerticalAlignment="Top" Width="75" Click="button1_Click"  Canvas.Left="79" Canvas.Top="32" />
    </Grid>
</Window>

//后台代码

private void button2_Click(object sender, RoutedEventArgs e)
        {
            RotateTransform rtf = new RotateTransform();
            rectangle2.RenderTransform = rtf;
            DoubleAnimation dbAscending = new DoubleAnimation(0, 360, new Duration(TimeSpan.FromSeconds(3)));
            Storyboard storyboard = new Storyboard();
            dbAscending.RepeatBehavior = RepeatBehavior.Forever;
            storyboard.Children.Add(dbAscending);
            Storyboard.SetTarget(dbAscending, rectangle2);
            Storyboard.SetTargetProperty(dbAscending, new PropertyPath("RenderTransform.Angle"));
            storyboard.Begin();
        }
      //  using System.Windows.Media.Animation;
        private void button1_Click(object sender, RoutedEventArgs e)
        {
            RotateTransform rtf = new RotateTransform();
            rectangle2.RenderTransform = rtf;
            DoubleAnimation dbAscending = new DoubleAnimation(0, 360, new Duration(TimeSpan.FromSeconds(3)));
            dbAscending.RepeatBehavior = RepeatBehavior.Forever;
            rtf.BeginAnimation(RotateTransform.AngleProperty, dbAscending);
        }