how to get the content from the screen by c#

description: I want to get the content from the address(51hupai),for example:I want to get the time of 目前最低可成交价（the lowest price）:90600 as the picture shows I want develop a software can identify all the content in the picture by c

with winform technology. How could I do. I am looking forward to your reply,thank you.

Besides,the address's content is showed by a flash not doc or picture.May be I should identify this by identify my screen.