You'll need to use a web crawler/screen scraper. The act of crawling, scraping and storing the data is completely separate from displaying this on your page.
Clarification: You'll need to scrape the page for the data you'd like. It may be worth while to see if the website has an API you can consume.
Check out a local example of a web crawler: A Simple Crawler Using C# Sockets
Screen Scraping with C# for ASP.NET