Question

我的WPF应用程序中有listview控件的工作上下文菜单。我想要启用上下文菜单项，如果用户右键单击列表视图项但禁用它们是在listview的面板区域上单击。谢谢 MK

更新：这是我的列表视图，但我想在用户点击面板区域时禁用MenuItems“Remove”和“Calculate”。感谢您的回复

          <ListView Name="lb_proplist"  DisplayMemberPath ="Name" HorizontalAlignment="Left" ToolTip="Use right click to see more options"  
                  ItemsSource="{Binding  Converter={StaticResource FilterByPropTypeConverter}}" Margin="0,0,0,0" 
                  ContextMenuOpening="ContextMenu_ContextMenuOpening" >


          <ListView.ContextMenu>
            <ContextMenu >
              <MenuItem Name="cmi_addNew" Header="Add New"
                  Command="{Binding AddNewItemItem}"
                  CommandParameter="{Binding RelativeSource={RelativeSource AncestorType=ContextMenu}}" />
              <MenuItem Name="cmi_remove" Header="Remove"
                  Command="{Binding RemoveItem}"
                  CommandParameter="{Binding RelativeSource={RelativeSource AncestorType=ContextMenu}, 
                  Path=PlacementTarget.SelectedItem}" />
              <MenuItem Name="cmi_calculate" Header="Calculate"
                  Command="{Binding CalculateItem}"
                  CommandParameter="{Binding RelativeSource={RelativeSource AncestorType=ContextMenu}, 
                  Path=PlacementTarget.SelectedItem}" />

            </ContextMenu>
          </ListView.ContextMenu>
          <ListView.View>
            <GridView>
              <GridViewColumn Header="Name" DisplayMemberBinding="{Binding Name}" Width="200"/>
            </GridView>
          </ListView.View>
        </ListView>

Answer 1

嗯，这可以使用ListView的 ItemsTemplate 属性来完成：

<ListView.ItemTemplate>
    <DataTemplate>
        <DockPanel Tag = "{Binding DataContext, ElementName=myListView}">

            <TextBlock Text="{Binding}"/>

            <DockPanel.ContextMenu>
                <ContextMenu>
                    <MenuItem Header="Local Item 1" 
                              Command="{Binding Path=PlacementTarget.Tag.CommandName, RelativeSource={RelativeSource AncestorType={x:Type ContextMenu}}}"/>
                    <MenuItem Header="Local Item 2"/>
                </ContextMenu>
            </DockPanel.ContextMenu>

        </DockPanel>
    </DataTemplate>
</ListView.ItemTemplate>

例如， ContextMenu 仅针对项目创建，但不针对整个控件创建。
此外，标记会添加到 DockPanel 中以访问原始DataContext。

好吧，如果是 GridView ，您需要覆盖 ListViewItem 的样式，并将 ContextMenu 绑定为 StaticResource

                <ListView.Resources>
                    <ContextMenu x:Key="ItemContextMenu">
                        <MenuItem Header="Add New"/>
                    </ContextMenu>
                </ListView.Resources>
                <ListView.ItemContainerStyle>
                    <Style TargetType="{x:Type ListViewItem}">
                        <Setter Property="ContextMenu" Value="{StaticResource ItemContextMenu}"/>
                    </Style>
                </ListView.ItemContainerStyle>

请看一下this article and answer。

为listview和listview项创建单独的上下文菜单

1 个答案: