WPF右键弹出菜单(ContextMenu的应用)

例子1：
<RichTextBox>
    <RichTextBox.ContextMenu>
        <ContextMenu>
            <MenuItem Command="Cut">
                <MenuItem.Icon>
                    <Image Source="Images/cut.png" />
                </MenuItem.Icon>
            </MenuItem>
            <MenuItem Command="Copy">
                <MenuItem.Icon>
                    <Image Source="Images/copy.png" />
                </MenuItem.Icon>
            </MenuItem>
            <MenuItem Command="Paste">
                <MenuItem.Icon>
                    <Image Source="Images/paste.png" />
                </MenuItem.Icon>
            </MenuItem>
         <MenuItem header="111111"  click=”xxxxx”>  </MenuItem>

        </ContextMenu>
    </RichTextBox.ContextMenu></RichTextBox>

例子2：
<DataTemplate>
   <Grid Tag="{Binding DataContext, RelativeSource={RelativeSource AncestorType={x:Type ListBox}}}">
      <Grid.ContextMenu>
          <ContextMenu DataContext="{Binding Path=PlacementTarget.Tag, RelativeSource={RelativeSource Self}}">
             <MenuItem Content="Cut" Command="{Binding CutCommand}" />
             <MenuItem Content="Copy" Command="{Binding CopyCommand}" />
             <MenuItem Content="Paste" Command="{Binding PasteCommand}" />
          </ContextMenu>
      </Grid.ContextMenu>
   </Grid>
</DataTemplate>

例子3： 点击按钮，出现菜单
<Window x:Class="WpfTutorialSamples.Common_interface_controls.ContextMenuManuallyInvokedSample"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="ContextMenuManuallyInvokedSample" Height="250" Width="250">
    <Window.Resources>
        <ContextMenu x:Key="cmButton">  
            <MenuItem Header="Menu item 1" />
            <MenuItem Header="Menu item 2" />
            <Separator />
            <MenuItem Header="Menu item 3" />
        </ContextMenu>
    </Window.Resources>
    <Grid>
        <Button Content="Click me!" VerticalAlignment="Center" HorizontalAlignment="Center" Click="Button_Click" />
    </Grid>
</Window>
using System;
using System.Windows;
using System.Windows.Controls;

namespace WpfTutorialSamples.Common_interface_controls
{
    public partial class ContextMenuManuallyInvokedSample : Window
    {
        public ContextMenuManuallyInvokedSample()
        {
            InitializeComponent();
        }

        private void Button_Click(object sender, RoutedEventArgs e)
        {
            ContextMenu cm = this.FindResource("cmButton") as ContextMenu;
            cm.PlacementTarget = sender as Button;
            cm.IsOpen = true;
        }
    }
}

效果如下图:

例子4: 绑定listbox中的元素
<ListBox   Name="ListboxDisplay" Height="220" Margin="16,213,351,0" VerticalAlignment="Top">
<ListBox.ContextMenu>
<ContextMenu DataContext="Binding ElementName=ListboxDisplay, Path=SelectedItems">
    <MenuItem  Header="write epc" Click="menu_write_epc" ToolTip="" ></MenuItem>
    <MenuItem  Header="write tid" Click="menu_write_tid"  ToolTip=""></MenuItem>
    <MenuItem  Header="write user" Click="menu_write_user" ToolTip=""></MenuItem>
    <MenuItem  Header="lock" Click="menu_lock" ToolTip=""></MenuItem>
</ContextMenu>
</ListBox.ContextMenu>
</ListBox>