说明：  最近谈论较多的就是Datagrid，特别新手最是郁闷为何没有更好的控件，来满足自已的需求。 其实通过重写可以达到很多不同的功能体验，在这里我们仅仅讨论关于datagridcolumnstyle重写的问题
(more recently to talk about is Datagrid, most newcomers are particularly depressed for no better controls to meet their own needs. In fact, rewriting can be achieved through many different functional experience, Here we discuss only on the issue of rewriting datagridcolumnstyle)