文本菜单的ListViewItem的唯一 [英] ContextMenu for ListViewItem only

问题描述

我有一个上下文菜单 - 问题是，我需要它仅仅是点击一个ListViewItem的时候打开。现在，如果我在ListView或在头的任意位置单击它会打开。

I have a context menu - problem is I need it to only open when a listviewitem is clicked. Right now it will open if I click anywhere in the listview or in the header.

<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>

我曾尝试添加的ContextMenu作为一种资源，并把它当成一种风格，但是这打破了命令（点击详细信息应该打开一个对话窗口，不起作用这种方式）

I have tried adding the ContextMenu as a resource and applying it as a style, but this breaks the command (clicking on More Info should open a dialog window, doesnt work this way)

<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>

所以不知道如何限制上下文菜单只有ListViewItem的，并具有指挥工作。

So not sure how to restrict the context menu to only the listviewitem and have the command work.

推荐答案

使用的在命令中的RelativeSource 模板结合，这将工作：

Use the RelativeSource in the command binding in the template, and it will work:

<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>

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