RichTextBlock text line count
问题 I am working on Windows Phone 8.1 application and I got this issue: I have a RichTextBlock control which holds my text, if my control height is bigger than my screen I need to scroll line by line automaticly while the user reads the text. Is there any way to determine the number of the lines in my RichTextBlock or geometric calculation is the only way? I've tried to iterate over the Blocks collection, but nothing seems to be relevant. The only thing that I've came with is by using TextPointer