如何在C＃中从网页源获取图像源

Question

I am trying to make a program easy enough my co-workers can use it. The program takes the inputted image ID number, adds it to the static link, and downloads the image. The problem is to get the image ID you have to view the pages source code. Is there a way I can have it so I input the document number / link and it automatically gets the image source from the webpage's source?

If you need to look at an example, here is a random example document: http://ori2.polk-county.net/wb_or1/details.asp?doc_id=7029941&file_num=2008093164

Also, I am using C#

Answer 1

Assuming that your documents are all accessed through the same URL .http://ori2.polk-county.net/wb_or1/details.asp

You can use the WebRequest class to POST your doc_id and file_num. You should then receive the image in the response.

This is a good place to start