你好，

请阅读粘贴帖子，特别是  发布指南：主题行
标签，不要忘记在你的问题中添加标签。

Please read the sticky posts, especially the Guide to posting: subject line tags, and don't forget add tag to your question.

问题是你把Grid放在ScrollViewer中我不明白为什么你这样做。对于修复问题，只需删除DataList

The problem is that you put Grid in ScrollViewer I don't understand why you do that. For fix issue just remove DataList