效果:
WPF 菜单栏ContextMenu

前端写法:

<Border >
	<!--菜单栏-->
	<Border.ContextMenu>
		<ContextMenu>
			<MenuItem Header="修改文字内容" Click="ModifyTextClick"></MenuItem>
			<MenuItem Header="删除" Click="DeleteClick"></MenuItem>
		</ContextMenu>
	</Border.ContextMenu>
</Border>

也可以在后端动态生成:

//添加菜单栏
var menu = new MenuItem();
menu.Header = "menu1";
menu.Click += (s, e) =>
{
	//do something
};
//menu.IsEnabled = true;
myBorder2.ContextMenu = new ContextMenu();
myBorder2.ContextMenu.Items.Add(menu);

示例代码

ContextMenus

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