具有 ContextMenu 单击事件的 WPF ListBox 项目
WPF ListBox item with ContextMenu click event
我正在尝试处理 ListBoxItem 的上下文菜单上的单击事件。
XAML代码是:
<ListBox x:Name="LB_TranslationResult" HorizontalAlignment="Left" Height="128" Margin="254,71,0,0" VerticalAlignment="Top" Width="191">
<ListBox.ItemContainerStyle>
<Style TargetType="ListBoxItem">
<Setter Property="ContextMenu">
<Setter.Value>
<ContextMenu>
<MenuItem Header="Delete" Click="DeleteItem" />
</ContextMenu>
</Setter.Value>
</Setter>
</Style>
</ListBox.ItemContainerStyle>
</ListBox>
DeleteItem 事件如下所示:
private void DeleteItem(object sender, RoutedEventArgs e)
{
MessageBox.Show("Test");
}
奇怪,但是这个事件不起作用。上下文菜单出现,但当我点击它的项目时没有任何反应。
你能告诉我这段代码有什么问题吗?
将 Click 事件的事件处理程序包装到样式中,并使用 EventSetter 调用事件处理程序背后的代码:
<ListBox x:Name="LB_TranslationResult" HorizontalAlignment="Left" Height="128" Margin="254,71,0,0" VerticalAlignment="Top" Width="191">
<ListBox.Resources>
<Style x:Key="DeleteItemContextMenuStyle" TargetType="MenuItem">
<EventSetter Event="Click" Handler="DeleteItem"/>
</Style>
</ListBox.Resources>
<ListBox.ItemContainerStyle>
<Style TargetType="ListBoxItem">
<Setter Property="ContextMenu">
<Setter.Value>
<ContextMenu>
<MenuItem Header="Delete" Style="{StaticResource DeleteItemContextMenuStyle}"/>
</ContextMenu>
</Setter.Value>
</Setter>
</Style>
</ListBox.ItemContainerStyle>
</ListBox>
我正在尝试处理 ListBoxItem 的上下文菜单上的单击事件。 XAML代码是:
<ListBox x:Name="LB_TranslationResult" HorizontalAlignment="Left" Height="128" Margin="254,71,0,0" VerticalAlignment="Top" Width="191">
<ListBox.ItemContainerStyle>
<Style TargetType="ListBoxItem">
<Setter Property="ContextMenu">
<Setter.Value>
<ContextMenu>
<MenuItem Header="Delete" Click="DeleteItem" />
</ContextMenu>
</Setter.Value>
</Setter>
</Style>
</ListBox.ItemContainerStyle>
</ListBox>
DeleteItem 事件如下所示:
private void DeleteItem(object sender, RoutedEventArgs e)
{
MessageBox.Show("Test");
}
奇怪,但是这个事件不起作用。上下文菜单出现,但当我点击它的项目时没有任何反应。
你能告诉我这段代码有什么问题吗?
将 Click 事件的事件处理程序包装到样式中,并使用 EventSetter 调用事件处理程序背后的代码:
<ListBox x:Name="LB_TranslationResult" HorizontalAlignment="Left" Height="128" Margin="254,71,0,0" VerticalAlignment="Top" Width="191">
<ListBox.Resources>
<Style x:Key="DeleteItemContextMenuStyle" TargetType="MenuItem">
<EventSetter Event="Click" Handler="DeleteItem"/>
</Style>
</ListBox.Resources>
<ListBox.ItemContainerStyle>
<Style TargetType="ListBoxItem">
<Setter Property="ContextMenu">
<Setter.Value>
<ContextMenu>
<MenuItem Header="Delete" Style="{StaticResource DeleteItemContextMenuStyle}"/>
</ContextMenu>
</Setter.Value>
</Setter>
</Style>
</ListBox.ItemContainerStyle>
</ListBox>