我们所用到的桌面app，有左键菜单和右键菜单。在as和C#中同样分有左键菜单和右键菜单。而且API名字都一样(有部分不同),不过里边的属性不相同。

在C#中，右键菜单又叫快捷菜单。创建菜单，一种通过控件拖动进Grid中，一种用代码创建。也就是写在XAML中和写在cs中。

左键叫Menu,右键叫ContextMenu。左右键里边是MenuItem。

MenuItem有个属性，叫Header,这个东西啊，你会注意到有些前边叫了”_”。这个干嘛用呢。就是为了快速访问，用户可以通过Alt键 ,再 “-“之后的字母组合触发。

在这里要注意，在同一个菜单中，使用多个相同的访问键会让人迷糊。

对于控件。它的Name属性很重要。如果用AS来说，这个就是它的实例名称。

下别贴出左键的代码，看它的结构：

<Window x:Class="WPFMenu.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="350" Width="525">
    <Grid>
        <DockPanel Height="100" HorizontalAlignment="Stretch" Margin="0,0,0,0" Name="dockPanel1" VerticalAlignment="Top" Width="Auto">
            <Menu Height="23" Name="menu1" DockPanel.Dock="Top"  VerticalAlignment="Top">
                <MenuItem Header="_File" >
                    <MenuItem Header="_New File" Name="newFile">
                        <MenuItem.Icon>
                            <Image Source="01.png" Width="16" Height="16"/>
                        </MenuItem.Icon>
                    </MenuItem>
                    <MenuItem Header="_Save File" Name="saveFile">
                        <MenuItem.Icon>
                            <Image Source="02.png" Width="16" Height="16"/>
                        </MenuItem.Icon>
                    </MenuItem>
                    <MenuItem Header="_Exit" Name="exit" />
                </MenuItem>
                <MenuItem Header="_Help" Name="help">
                    <MenuItem Header="About" Name="about">
                        <MenuItem.Icon>
                            <Image Source="03.png" Width="16" Height="16"/>
                        </MenuItem.Icon>

                    </MenuItem>
                </MenuItem>
            </Menu>
        </DockPanel>
        <TextBox Height="147" HorizontalAlignment="Left" Margin="51,132,0,0" Name="box" VerticalAlignment="Top" Width="401" />
    </Grid>
</Window>

在左键的子菜单中，可以给菜单前边加icon图标。用到Image标签，给它的Source指定正确的图片路径。设置宽高就好了。

下边说下右键吧。右键是ContextMenu。子菜单的一样是MenuItem。创建子菜单，并且给子菜单添加事件。

            MenuItem saveItem = new MenuItem();
            saveItem.Header = "Save File";
            saveItem.Click += saveHandler;
 private void saveHandler(object sender, RoutedEventArgs e)
        {
            printf("想要保存File！");
        }

然后将MenuItem添加到ContextMenu的Items中

              ContextMenu contextMenu = new ContextMenu();
            contextMenu.Items.Add(saveItem);

最后，创建的ContextMenu赋给窗体的contextMenu属性

 this.ContextMenu = contextMenu;

在demo里边，about会触发一个窗体出来。

            AboutForm aboutForm = new AboutForm();
            aboutForm.ShowDialog();

虽然用ShowDialog()可以将窗体触发出来。只是位置太那个了点。因为对C#不熟悉，应该有方法可以让窗体显示到想要显示的位置的。

下别贴出完整demo代码。晚上回来敲的。学啊学C#。

MainWindow.xaml

<Window x:Class="WPFMenu.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="350" Width="525">
    <Grid>
        <DockPanel Height="100" HorizontalAlignment="Stretch" Margin="0,0,0,0" Name="dockPanel1" VerticalAlignment="Top" Width="Auto">
            <Menu Height="23" Name="menu1" DockPanel.Dock="Top"  VerticalAlignment="Top">
                <MenuItem Header="_File" >
                    <MenuItem Header="_New File" Name="newFile">
                        <MenuItem.Icon>
                            <Image Source="01.png" Width="16" Height="16"/>
                        </MenuItem.Icon>
                    </MenuItem>
                    <MenuItem Header="_Save File" Name="saveFile">
                        <MenuItem.Icon>
                            <Image Source="02.png" Width="16" Height="16"/>
                        </MenuItem.Icon>
                    </MenuItem>
                    <MenuItem Header="_Exit" Name="exit" />
                </MenuItem>
                <MenuItem Header="_Help" Name="help">
                    <MenuItem Header="About" Name="about">
                        <MenuItem.Icon>
                            <Image Source="03.png" Width="16" Height="16"/>
                        </MenuItem.Icon>

                    </MenuItem>
                </MenuItem>
            </Menu>
        </DockPanel>
        <TextBox Height="147" HorizontalAlignment="Left" Margin="51,132,0,0" Name="box" VerticalAlignment="Top" Width="401" />
    </Grid>
</Window>

 

MainWindow.xaml.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace WPFMenu
{
    /// <summary>
    /// MainWindow.xaml 的交互逻辑
    /// </summary>
    public partial class MainWindow : Window
    {
        private ContextMenu contextMenu;

        public MainWindow()
        {
            InitializeComponent();
            init();
        }

        private void init()
        {
            MenuItem saveItem = new MenuItem();
            saveItem.Header = "Save File";
            saveItem.Click += saveHandler;

            MenuItem exitItem = new MenuItem();
            exitItem.Header = "Exit";
            exitItem.Click += exitHandler;

            contextMenu = new ContextMenu();
            contextMenu.Items.Add(saveItem);
            contextMenu.Items.Add(new Separator());  //这个是分割线
            contextMenu.Items.Add(exitItem);

            this.ContextMenu = contextMenu;

            newFile.Click += newFileHandler;
            saveFile.Click += saveHandler;
            exit.Click += exitHandler;
            about.Click += aboutHandler;
        }

        private void newFileHandler(object sender, RoutedEventArgs e)
        {
            printf("想要新建File！");
        }

        private void saveHandler(object sender, RoutedEventArgs e)
        {
            printf("想要保存File！");
        }

        private void exitHandler(object sender, RoutedEventArgs e)
        {
            printf("想要退出App！");
        }

        private void aboutHandler(object sender, RoutedEventArgs e)
        {
            printf("想要关于，我就关于给你看！");
            AboutForm aboutForm = new AboutForm();
            aboutForm.ShowDialog();
        }

        private void printf(string str)
        {
            box.AppendText("你当前的操作：" +str + "\n");
        }
    }
}

 

AboutForm.xaml

<Window x:Class="WPFMenu.AboutForm"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="AboutForm" Height="185" Width="294">
    <Grid>
        <Label Content="VeryMagazine 1.0.0" Height="28" HorizontalAlignment="Left" Margin="34,23,0,0" Name="label1" VerticalAlignment="Top" />
        <Label Content="春花秋月何时了，往事知多少！" Height="28" HorizontalAlignment="Left" Margin="34,57,0,0" Name="label2" VerticalAlignment="Top" FontSize="13" />
        <Button Content="Ok" Height="23" HorizontalAlignment="Left" Margin="129,100,0,0" Name="okBtn" VerticalAlignment="Top" Width="75" />
    </Grid>
</Window>

AboutForm.xaml.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Shapes;

namespace WPFMenu
{
    /// <summary>
    /// AboutForm.xaml 的交互逻辑
    /// </summary>
    public partial class AboutForm : Window
    {
        public AboutForm()
        {
            InitializeComponent();
            okBtn.Click += clickHandler;
        }

        private void clickHandler(object sender, RoutedEventArgs e)
        {
            this.Close();
        }
    }
}