Silverlight事件主要分为输入事件和非你输入事件两个种类。

输入事件主要指鼠标、键盘等你输入设备的事件；非输入事件指对象生存期的改变以及状态的改变等。我们这篇文章主要讲输入事件，至于事件的功能这里不再描述，主要是通过一个综合的例子来体验事件.

做一个可以用鼠标在指定区域内随意拖放的圆，在拖放过程中用到MouseMove、MouseLeftButtonDown、MouseLeftButtonUp这三个事件在移动鼠标的过程中，实时的来获取鼠标的坐标，然后更新圆的Canvas.Top和Canvas.Left

XAML：

<Canvas x:Name="LayoutRoot" Background="AliceBlue"><Ellipse Canvas.Top="50" Canvas.Left="50" Width="100" Height="100" Fill="Gold" Stroke="Black" StrokeThickness="3" MouseLeftButtonDown="Ellipse_MouseLeftButtonDown" MouseMove="Ellipse_MouseMove" MouseLeftButtonUp="Ellipse_MouseLeftButtonUp"/><TextBlock x:Name="txb_postion" FontSize="26" /></Canvas>

C#：

Point CurrPostion;//定义当前坐标bool MouseMoveing = false;//定义是否移动中的布尔变量public MouseEvent(){InitializeComponent();}private void Ellipse_MouseLeftButtonDown(object sender, MouseButtonEventArgs e){FrameworkElement element = sender as FrameworkElement;//获取当前坐标CurrPostion = e.GetPosition(null);//设置开始拖动变量MouseMoveing = true;if (element != null){//捕捉鼠标位置element.CaptureMouse();//设置鼠标的指针为手形element.Cursor = Cursors.Hand;}}private void Ellipse_MouseMove(object sender, MouseEventArgs e){//获取当前的Silverlight对象FrameworkElement element = sender as FrameworkElement;if (MouseMoveing){//获取当前坐标double CurrX = e.GetPosition(null).X - CurrPostion.X;double CurrY = e.GetPosition(null).Y - CurrPostion.Y;//设置对象的坐标element.SetValue(Canvas.LeftProperty, CurrX + (double)element.GetValue(Canvas.LeftProperty));element.SetValue(Canvas.TopProperty, CurrY + (double)element.GetValue(Canvas.TopProperty));//输出当前坐标txb_postion.Text = "Ellipse的当前坐标，X:" + CurrPostion.X.ToString() + ",Y:" + CurrPostion.Y.ToString();//保存当前坐标CurrPostion = e.GetPosition(null);}}private void Ellipse_MouseLeftButtonUp(object sender, MouseButtonEventArgs e){FrameworkElement element = sender as FrameworkElement;//放开鼠标后释放拖动变量的值MouseMoveing = false;//停止捕捉鼠标位置element.ReleaseMouseCapture();//设置当前坐标CurrPostion.X = 0;CurrPostion.Y = 0;//恢复原来鼠标的指针element.Cursor = null;}

然后运行结果，可以随意拖动圆，不过不太完整当鼠标把圆拖到浏览器边缘以外看不到时，就拖不回来了。有兴趣的朋友可以再完善一下：

例子很简单，主要是为了体验Silverlight的输入事件。