arcgis addin 菜单下 菜单项控制 工具栏显示或隐藏

参考下面代码：
ICommandBars commandBars = m_app.Document.CommandBars; 
UID uid = new UIDClass(); 
uid.Value = "{该工具条的UID}"; 
ICommandBar commandBar= commandBars.Find(); //找到该工具条
commandBar.Dock(esriDockFlags.esriDockHide);//将该工具条隐藏