如何使用list在每个ContexMenu项上添加点击事件？
如何使用list在每个ContexMenu项上添加点击事件？
提问于 2021-11-15 15:13:57
我正在尝试将字符串列表转换为ContexMenu。如何将单击事件应用于每个项目，并显示带有所单击项目文本的消息？
政务司司长
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
List<string> list = new List<string>()
{
"item1", "item2", "item3"
};
context.ItemsSource = list;
}
}XAML
<Window x:Class="wpftest.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:local="clr-namespace:wpftest"
mc:Ignorable="d"
Title="MainWindow" Height="450" Width="800">
<Grid Name="grid" Background="Gray">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="100"/>
</Grid.ColumnDefinitions>
<Grid.ContextMenu>
<ContextMenu Name="context"/>
</Grid.ContextMenu>
</Grid>
</Window>图像
回答 1
Stack Overflow用户
回答已采纳
发布于 2021-11-15 15:28:11
您可以通过两种方式完成此操作。
通过从代码隐藏构建ContextMenu：
// ----- XAML part
<Grid Name="grid" Background="Gray">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="100"/>
</Grid.ColumnDefinitions>
</Grid>
// ----- Code part
// Initialize context menu
var contextMenu = new ContextMenu();
// Fill context menu with items
for (int i = 1; i <= 3; i++)
{
// Create simple item with some text on it
var menuItem = new MenuItem { Header = "Item #" + i };
// Add click handler
menuItem.Click += delegate { _ = MessageBox.Show(menuItem.Header + " was clicked"); };
// Add item to menu
contextMenu.Items.Add(menuItem);
}
// Set context menu to grid
grid.ContextMenu = contextMenu;通过为每个MenuItem设置XAML中的单击处理程序
// ----- XAML part
<Grid Name="grid" Background="Gray">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="100"/>
</Grid.ColumnDefinitions>
<Grid.ContextMenu>
<ContextMenu>
<MenuItem Header="Item #1" Click="ContextMenuItem_Click"/>
<MenuItem Header="Item #2" Click="ContextMenuItem_Click"/>
<MenuItem Header="Item #3" Click="ContextMenuItem_Click"/>
</ContextMenu>
</Grid.ContextMenu>
</Grid>
// ----- Code part
// One click handler for each MenuItem.
// You can differ MenuItems by Header property for example
private void ContextMenuItem_Click(object sender, RoutedEventArgs e)
{
if (sender is MenuItem menuItem)
_ = MessageBox.Show(menuItem.Header + " was clicked");
}页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/69976653
复制相关文章
相似问题
腾讯云开发者
