当我们打开silverlight的页面点击右键的时候，会千篇一律的出现那个系统菜单。有时候在项目中我们需要一些特殊的右键菜单设置。有了Popup我们就可以自己定义了。定义自己想要的右键菜单。直接上代码：
一，前台代码：
1 <UserControl x:Class="SLTest.MainPage" 2 xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 3 xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 4 xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 5 xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 6 mc:Ignorable="d" 7 d:DesignHeight="300" d:DesignWidth="400"> 8 9 <Grid x:Name="LayoutRoot" Background="Transparent"> 10 <TextBlock x:Name="txtStatus" Width="300" HorizontalAlignment="Center"/> 11 <Grid x:Name="zone" Height="200" Width="200" Background="Wheat" > 12 </Grid> 13 </Grid> 14 </UserControl>
前台很简单，我想要的效果是在名称为zone的Grid区域内，显示自定义的菜单，屏蔽掉系统自带的右键。
二，后台代码
1 public partial class MainPage : UserControl 2 { 3 Popup rootPopup = new Popup();//声明一个Popup对象 4 5 public MainPage() 6 { 7 InitializeComponent(); 8 Loaded += new RoutedEventHandler(MainPage_Loaded); 9 } 10 11 void MainPage_Loaded(object sender, RoutedEventArgs e) 12 { 13 //zone 区域的鼠标左键点击事件，这两个事件必须同时注册，否则屏蔽不掉系统右键菜单 14 zone.MouseRightButtonDown += new MouseButtonEventHandler(zone_MouseRightButtonDown); 15 zone.MouseRightButtonUp += new MouseButtonEventHandler(zone_MouseRightButtonUp); 16 } 17 18 /// <summary> 19 /// 鼠标左键释放事件 20 /// </summary> 21 /// <param name="sender"></param> 22 /// <param name="e"></param> 23 void zone_MouseRightButtonUp(object sender, MouseButtonEventArgs e) 24 { 25 rootPopup.IsOpen = true;//显示Popup 26 rootPopup.Width = App.Current.Host.Content.ActualWidth;//设置Popup的宽度即当前区域的宽度 27 rootPopup.Height = App.Current.Host.Content.ActualHeight;//设置Popup的高度即当前区域的高度 28 29 Grid rootGrid = new Grid(); 30 ListBox listBox = new ListBox(); 31 32 for (int i = 0; i < 5; i++) 33 { 34 TextBlock txt = new TextBlock() { Text = "Item" + i.ToString() };//声明TextBlock对象即自定义菜单的项 35 txt.MouseLeftButtonUp += new MouseButtonEventHandler(txt_MouseLeftButtonUp);//注册TextBlock的鼠标点击事件 36 listBox.Items.Add(txt); 37 } 38 rootGrid.Children.Add(listBox); 39 40 Point point = e.GetPosition(LayoutRoot);//获得当前鼠标点击的坐标 41 rootPopup.Child = rootGrid;//设置Propup的承载的内容为rootGrid 42 rootPopup.Margin = new Thickness(point.X, point.Y, 0, 0);//设置Propup的显示的位置 43 } 44 45 /// <summary> 46 /// 自定义菜单的点击事件 47 /// </summary> 48 /// <param name="sender"></param> 49 /// <param name="e"></param> 50 void txt_MouseLeftButtonUp(object sender, MouseButtonEventArgs e) 51 { 52 rootPopup.IsOpen = false;//点击之后隐藏Prpup 53 txtStatus.Text = "你点击了：" + (sender as TextBlock).Text;//显示点击的内容 54 } 55 56 /// <summary> 57 /// 鼠标左键点击事件 58 /// </summary> 59 /// <param name="sender"></param> 60 /// <param name="e"></param> 61 void zone_MouseRightButtonDown(object sender, MouseButtonEventArgs e) 62 { 63 e.Handled = true;//屏蔽系统右键菜单 64 } 65 }
至此已经全部完成。
运行效果如下：
