ContextMenu for ListViewItem only

问题

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>

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>

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

回答1:

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>

来源：https://stackoverflow.com/questions/18921188/contextmenu-for-listviewitem-only

标签

wpf

contextmenu

listviewitem