1，支持cui和cuix。

2，菜单组重复加载或显示，C#下都会崩溃。所以要判断。

3，菜单加到最后。

public static AcadMenuGroup LoadMenu(AcadMenuGroups menuGroups, string filepath)
    {
        if( null == menuGroups )
        {
           return null;
        }
        if (!System.IO.File.Exists(filepath))
        {
            return null;
        }
 
        //如果已经加载则直接返回
        string strMenuGroupName = System.IO.Path.GetFileNameWithoutExtension(filepath);
        for (int i = 0; i < menuGroups.Count; i++)
        {
            AcadMenuGroup menuGroup = menuGroups.Item(i);
            if (menuGroup.Name.Equals(strMenuGroupName, StringComparison.OrdinalIgnoreCase))
            {
                return menuGroup;
            }
        }
         
        return menuGroups.Load(filepath);
      }
 
    protected void LoadMenu(AcadApplication acadapp,string filepath)
    {
        AcadMenuGroup menuGroup = LoadMenu(acadapp.MenuGroups,filepath);
        if (null == menuGroup)
        {
            return;
        }
 
        //菜单栏 各popMenu的标题
        List<string> names = new List<string>();
        for (int i = 0; i < acadapp.MenuBar.Count; i++)
        {
            names.Add(acadapp.MenuBar.Item(i).Name);
        }
 
        for (int i = 0; i < menuGroup.Menus.Count; i++)
        {//依次加到最后
            AcadPopupMenu popMenu = menuGroup.Menus.Item(i);
            if (-1 != names.IndexOf(popMenu.Name))
            {//已经加载
                continue;
            }
            popMenu.InsertInMenuBar(i + acadapp.MenuBar.Count);
        }
         
    }