WPF动画制作简单的按钮动画

<StackPanel  ButtonBase.Click="Grid_Click">
        <Button Content="逐渐变大缩小"/>
        <Button Content="鼠标移动特效" />
    </StackPanel>

//这事件不做过多的解释有基础的一看就会明白
 private void Grid_Click(object sender, RoutedEventArgs e)
        {
            object obj = e.OriginalSource;
            Button butn = null;
            if (obj is Button)
                butn = obj as Button;
            Type type = this.GetType();//获取当前实例
            Assembly assembly = type.Assembly;//获取在其中声明的类型
            //动态的实例化一个对象
            Window win = (Window)assembly.CreateInstance(type.Namespace + "." + butn.Content.ToString());
            win.Show();
            
        }
下面进行第一个动画：
xaml界面
  <Grid>
        <Button Content="点击逐渐增长" Height="45" HorizontalAlignment="Left" Margin="29,37,0,0" Name="btnGrow1" VerticalAlignment="Top" Width="213" />
        <Button Content="点击逐渐归位" Height="23" HorizontalAlignment="Left" Margin="86,88,0,0" Name="btnBack" VerticalAlignment="Top" Width="90" />
        <Button Content="点击增长" Height="46" HorizontalAlignment="Left" Margin="98,161,0,0" Name="btnGrow" VerticalAlignment="Top" Width="78" />
    </Grid>
cs:
public 逐渐变大缩小()
        {
            InitializeComponent();
            //给button注册点击事件
            btnGrow1.Click += new RoutedEventHandler(btnGrow1_Click);
            btnBack.Click += new RoutedEventHandler(btnBack_Click);
            btnGrow.Click += new RoutedEventHandler(btnGrow_Click);
        }
        //点击增长
        void btnGrow_Click(object sender, RoutedEventArgs e)
        {
            DoubleAnimation widthAnimation = new DoubleAnimation() { By=50,Duration=TimeSpan.FromSeconds(0.2) };
            btnGrow.BeginAnimation(Button.WidthProperty, widthAnimation);
        }
        //还原动画
        void btnBack_Click(object sender, RoutedEventArgs e)
        {
            DoubleAnimation widthAmination = new DoubleAnimation();
            widthAmination.Duration = TimeSpan.FromSeconds(1);
            DoubleAnimation heightAmimation = new DoubleAnimation();
            heightAmimation.Duration = TimeSpan.FromSeconds(1);
            btnGrow1.BeginAnimation(Button.WidthProperty, widthAmination);
            btnGrow1.BeginAnimation(Button.HeightProperty, heightAmimation);
        }
        //逐渐增长事件
        void btnGrow1_Click(object sender, RoutedEventArgs e)
        {
            DoubleAnimation widthAnimation = new DoubleAnimation()
            {
                To = this.Width - 30,
                Duration = TimeSpan.FromSeconds(1)
            };
            DoubleAnimation heightAnimation = new DoubleAnimation() 
            {
             To=(this.Height-40)/3,
             Duration=TimeSpan.FromSeconds(1)
            };
            btnGrow1.BeginAnimation(Button.WidthProperty, widthAnimation);
            btnGrow1.BeginAnimation(Button.HeightProperty, heightAnimation);
        }