从另一个线程添加另一个菜单项到菜单

Question

我正在创建新线程，在这个线程中我创建了我想要在主窗口的菜单中添加的新menuItem，但是我得到这样的错误（调用线程无法访问这个对象，因为一个不同的线程拥有它）。

Thread tempT = new Thread(new ThreadStart(LoadPlugins));
        tempT.SetApartmentState(ApartmentState.STA);
        tempT.IsBackground = true;
        tempT.Start();

所以在方法＆＃34; LoadPlugins＆＃34;我正在创建新的menuitem。

我试图通过以下方式解决此错误：

 Main_Menu.Dispatcher.Invoke(new Action(() => { Main_Menu.Items.Add(Plugin_Menu); }), System.Windows.Threading.DispatcherPriority.ContextIdle);

 Dispatcher.BeginInvoke(new Action(() => { Main_Menu.Items.Add(Plugin_Menu); }), System.Windows.Threading.DispatcherPriority.ContextIdle);

没什么可行的，希望得到帮助; D

 private void LoadPlugins()
    {
        MenuItem Plugin_Menu = new MenuItem();
        Plugin_Menu.Header = "Plugins";
        Plugin_Menu.Template = (ControlTemplate)FindResource("twMenuItem");

        plugins.Clear();

        DirectoryInfo pluginDirectory = new DirectoryInfo(pluginPath);

        if (!pluginDirectory.Exists)
        {
            pluginDirectory.Create();
        }

        var pluginFiles = Directory.GetFiles(pluginPath, "*.dll");

        foreach (var file in pluginFiles)
        {
            Assembly asm = Assembly.LoadFrom(file);

            var types = asm.GetTypes().
                        Where(t => t.GetInterfaces().
                        Where(i => i.FullName == typeof(IPlugin).FullName).Any());

            foreach (var type in types)
            {
                var plugin = asm.CreateInstance(type.FullName) as IPlugin;
                plugins.Add(plugin);
            }
        }

        foreach(IPlugin plugin in plugins)
        {

            MenuItem tempMenuItem = new MenuItem();

            tempMenuItem.Header = plugin.name;

            tempMenuItem.Template = (ControlTemplate)FindResource("twMenuItem");

            tempMenuItem.Click += (sender, args) =>
            {
                plugin.Init();
            };

            Plugin_Menu.Items.Add(tempMenuItem);
        }

          Dispatcher.BeginInvoke(new Action(() => { Main_Menu.Items.Add(Plugin_Menu); }), System.Windows.Threading.DispatcherPriority.ContextIdle);
    }