仅限ListViewItem的ContextMenu

Question

我有一个上下文菜单 - 问题是我需要它只在单击listviewitem时打开.现在,如果我点击列表视图中的任何位置或标题中,它将打开.

<ListView> 
    <ListView.ContextMenu>
        <ContextMenu>
            <MenuItem Header="More Info" Command="{Binding MoreInfo}" />
        </ContextMenu>
     </ListView.ContextMenu>
     <ListView.View> 
         <GridView> 
           <!-- columns and stuff here -->
         </GridView>
     </ListView.View>
 </ListView>

我已经尝试将ContextMenu添加为资源并将其应用为样式,但是这会破坏命令(单击"更多信息"应该打开一个对话框窗口,不会以这种方式工作)

<ListView.Resources>
    <ContextMenu x:Key="ItemContextMenu">
        <MenuItem Header="More Info" Command="{Binding MoreInfo}" Background="WhiteSmoke" />
    </ContextMenu>
</ListView.Resources>
<ListView.ItemContainerStyle>
    <Style TargetType="{x:Type ListViewItem}" >
        <Setter Property="ContextMenu" Value="{StaticResource ItemContextMenu}" />
    </Style>
</ListView.ItemContainerStyle>

所以不确定如何将上下文菜单限制为listviewitem并使命令有效.

Answer 1

在模板中的命令绑定中使用RelativeSource,它将起作用:

<ListView.Resources>
    <ContextMenu x:Key="ItemContextMenu">
        <MenuItem Header="More Info" Command="{Binding Path=DataContext.MoreInfo, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=ListView}}" Background="WhiteSmoke" />
    </ContextMenu>
</ListView.Resources>

<ListView.ItemContainerStyle>
    <Style TargetType="{x:Type ListViewItem}" >
        <Setter Property="ContextMenu" Value="{StaticResource ItemContextMenu}" />
    </Style>
</ListView.ItemContainerStyle>