ContextMenu CommandParamater綁定？

我試圖將ContextMenu項的commandParamater綁定到窗體上的另一個元素，但不管我嘗試的是什麼commandParamater始終是null。ContextMenu CommandParamater綁定？

有人可以告訴我如何正確綁定我的上下文菜單項的commandParamater？

我有什麼：

<TreeView.ItemTemplate> 
    <HierarchicalDataTemplate ItemsSource="{Binding Path=Files}"> 
     <Grid> 
      <Grid.ContextMenu> 
       <ContextMenu> 
       <MenuItem Header="Rename Folder" 
          Command="{Binding Path=ToggleControlVisability}" 
          CommandTarget="{Binding ElementName=FolderEditor}" 
          CommandParameter="{Binding ElementName=FolderEditor}"> 
       </MenuItem> 
       </ContextMenu> 
      </Grid.ContextMenu> 

      <Label Content="{Binding Path=FolderName}"></Label> 

      <StackPanel Name="FolderEditor" Orientation="Horizontal" 
         Visibility="Hidden"> 
       <TextBox Text="{Binding Path=FolderName}"></TextBox> 
      </StackPanel> 
     </Grid> 
    </HierarchicalDataTemplate> 
</TreeView.ItemTemplate>

來源

2011-07-19 Alex Hope O' Connor

可能重複在文本菜單從菜單項綁定]（http://stackoverflow.com/questions/1013558/elementname-binding-from-menuitem-in-contextmenu） – CodeNaked