如何在作为资源一部分的ContextMenu中访问menuitem

Question

我正在尝试访问ContextMenu中的MenuItem，而ContextMenu本身是一个协会资源的一部分

                    <TreeView.Resources>
                        <ContextMenu x:Key ="GroupContext"  StaysOpen="true">
                        <MenuItem Header="Blast to Whole Group" Click="BlastGroup_Click"/>
                        </ContextMenu>
                        <ContextMenu x:Key ="ContactContext"  Style="{x:Null}" Loaded="ContextMenu_Loaded">
                            <MenuItem Header="Delete Contact" Click ="ContactDelete_Click"/>
                            <MenuItem x:Name="ModifyGroupMenuItem" Header="Modify Grouping"  Style="{x:Null}">
                            </MenuItem>
                        </ContextMenu>
                </TreeView.Resources>

如何获得ModifyGroupMenuItem？ 我找到了一个解决方案来获取ContextMenu WPF control reference from xaml is not visible on the code side

Answer 1

通过Items集合的索引，或通过浏览逻辑树。

    ContextMenu menu = this.Resources["ContactContext"] as ContextMenu;

    MenuItem menuitemindex0 = menu.Items[0] as MenuItem;
    MenuItem menuitemindex1 = menu.Items[1] as MenuItem;

    MenuItem menuitembyname = LogicalTreeHelper.FindLogicalNode(menu, "ModifyGroupMenuItem") as MenuItem;