[img]http://b220.photo.store.qq.com/psb?/12d061b3-19ad-4ddf-aa13-05c43452d82d/Su4obplt2cfaQv.OtmuY5YrNLlBi4uamfYzI9N5Sess!/b/YUsFLIOzVwAAYmcdL4OAVwAA[/img]
这个是什么控件怎么用? C#