New Post: web page title is blank when use PathInfo to show the global data item attached to the Page

Solved!

@Html.Raw(news.Content) in my razor template

i have import all news from another CMS, and tidy the "Content" to xhtml, i have checked the "Content" filed in the data store, these is a empty title tag in the field...
so, when show a single news, the title is blank , it's my mistake!