Silverlight ContextMenu用法

分別通過後臺和前臺兩種方式說明在Silverlight中右鍵菜單的使用

首先要安裝Silverlight Toolkit，在項目中添加對System.Windows.Controls.Input.Toolkit 程序集的引用

1、直接在XAML中定義右鍵菜單，在XAML中添加命名空間xmlns:toolkit="http://schemas.microsoft.com/winfx/2006/xaml/presentation/toolkit",下面代碼是爲StackPanel添加右鍵菜單

<StackPanel  Orientation="Horizontal" >
	<TextBlock Text="1234" Margin="5,0,0,0"/>
	<toolkit:ContextMenuService.ContextMenu>
		<toolkit:ContextMenu>
			<toolkit:ContextMenu.Items>
				<toolkit:MenuItem Header="啓用" />
				<toolkit:MenuItem Header="禁用" />
			</toolkit:ContextMenu.Items>
		</toolkit:ContextMenu>
	</toolkit:ContextMenuService.ContextMenu>
</StackPanel>

2、通過後臺代碼添加右鍵菜單，如下

   void Loaded(object sender, RoutedEventArgs e)
       {
            ContextMenu contextMenu = new ContextMenu();
            contextMenu.Background = new SolidColorBrush(Colors.Transparent);
            MenuItem item1 = new MenuItem();
            item1.Header = "紅色";
            item1.Click += new RoutedEventHandler(item_Click);
            contextMenu.Items.Add(item1);
            MenuItem item2 = new MenuItem();
            item2.Header = "藍色";
            item2.Click += new RoutedEventHandler(item_Click);
            contextMenu.Items.Add(item2);
            MenuItem item3 = new MenuItem();
            item3.Header = "綠色";
            item3.Click += new RoutedEventHandler(item_Click);
            contextMenu.Items.Add(item3);
            ContextMenuService.SetContextMenu(txtName, contextMenu);
         }

 

     void item_Click(object sender, RoutedEventArgs e)
        {
            MenuItem item = sender as MenuItem;
            //ContextMenu parent = item.Parent as ContextMenu;
            switch (item.Header.ToString())
            {
                case "紅色":
                    ellipse1.Fill = new SolidColorBrush(Colors.Red);
                    break;
                case "藍色":
                    ellipse1.Fill = new SolidColorBrush(Colors.Blue);
                    break;
                case "綠色":
                    ellipse1.Fill = new SolidColorBrush(Colors.Green);
                    break;
                default:
                    break;
            }
        }