动态菜单，有助与初学者能很好的运用动态菜单。很多地方可以用到的。-Dynamic menu, help with the beginners to very good use of the dynamic menu. Can be used in many places.

c#创建动态菜单 代码非常简洁,对于学习者非常有帮助-c# create dynamic menu code is very concise, very helpful for the learners