如何在WPF数据网格中添加列上下文菜单

我正在尝试向WPF datagrid中的列添加上下文菜单，但不太明白这是如何实现的。我知道如何向datagrid中添加一个，但我希望根据列设置不同的菜单项，同时让菜单单击事件知道列，或者更好的是，知道选择上下文菜单的单元格

我的最终目标是创建一个上下文菜单，它有一个“Clear”菜单项，用于清空该列中的数据。对于复选框列，我不希望出现空字符串或false，我希望底层数据为null。如果有人对可重复使用的方法提出建议，我们也将不胜感激

---

多谢

我向单元格添加了一个上下文菜单，如下所示

  <!--Cell ContextMenu-->
  <ContextMenu
     x:Key="cellContextMenu">
     <MenuItem
        x:Name="menuFillUp"
        Click="menuFillUp_Click"
        Header="Fill _Up" />
     <MenuItem
        x:Name="menuFillDown"
        Click="menuFillDown_Click"
        Header="Fill _Down" />
  </ContextMenu>

---

我可能错过了一些东西，请随意发表评论，我会尝试填写详细信息。

另一个选项是将列标题设置为

文本块（或可以处理
上下文菜单的其他控件）

所以你可以说：

// Create a context menu
var cm = new ContextMenu();
cm.Items.Add(new MenutItem{Header="SampleItem"});

// Create a textblock with your header text and link the context menu
var tb = new TextBlock{Text="My Column Name"};
tb.ContextMenu = cm;

// Set the grid column header to your textblock
grid.Columns[0].Header=tb;

  <!--Show Hidden Columns ContextMenu-->
  <DataTemplate
     x:Key="menuItemColumnShow">
     <MenuItem
        x:Name="menuShowColumn"
        DataContext="{Binding Path=.}"
        Header="{Binding Path=Tag.Code}"
        Click="menuShowColumn_Click" />
  </DataTemplate>

  <!--Column ContextMenu-->
  <ContextMenu
     x:Key="columnContextMenu">
     <MenuItem
        x:Name="menuHideColumn"
        Click="menuHideColumn_Click"
        Header="Hide _Column" />
     <MenuItem
        x:Name="showMenu"
        Header="Show"
        ItemsSource="{Binding RelativeSource={RelativeSource AncestorType={x:Type local:ResultEditorGrid}}, Path=HiddenColumnCollection}"
        ItemTemplate="{StaticResource menuItemColumnShow}">
        <MenuItem.Style>
           <Style
              BasedOn="{StaticResource {x:Type MenuItem}}"
              TargetType="{x:Type MenuItem}">
              <Style.Triggers>
                 <DataTrigger
                    Binding="{Binding RelativeSource={RelativeSource self}, Path=Items.Count}"
                    Value="0">
                    <Setter
                       Property="Visibility"
                       Value="Collapsed" />
                 </DataTrigger>
              </Style.Triggers>
           </Style>
        </MenuItem.Style>
     </MenuItem>

     <MenuItem
        Header="_Add  Item"
        Command="local:MyCommands.AddTItem"
        CommandTarget="{Binding Path=PlacementTarget, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type ContextMenu}}}" />
  </ContextMenu>

      <!--ColumnManagerCell Style - Adds ContextMenu - Tool Tip Style for Marking Scheme Preview-->
  <Style
     TargetType="{x:Type dg:DataGridColumnHeader}">

     <Setter
        Property="ContextMenu"
        Value="{DynamicResource columnContextMenu}" />
  </Style>

 private void menuHideColumn_Click(object sender, RoutedEventArgs e) {

     //move thru the visual tree to get the context menu
     DependencyObject dep = (DependencyObject)e.OriginalSource;
     while ((dep != null) && !(dep is ContextMenu)) {
        dep = VisualTreeHelper.GetParent(dep);
     }
     if (dep == null) { }
     else {
        //we have a context menu, cast it
        ContextMenu contextMenu = (ContextMenu)dep;
        if (contextMenu.PlacementTarget is DataGridColumnHeader) {
           DataGridColumnHeader header = contextMenu.PlacementTarget as DataGridColumnHeader;
           //get the grid to hide the column
           myDerivedGrid.HideColumn(header.Column);
        }
     }
  }

// Create a context menu
var cm = new ContextMenu();
cm.Items.Add(new MenutItem{Header="SampleItem"});

// Create a textblock with your header text and link the context menu
var tb = new TextBlock{Text="My Column Name"};
tb.ContextMenu = cm;

// Set the grid column header to your textblock
grid.Columns[0].Header=tb;