VS 2008 Screen Scraping Or Web Scraping
Apr 8, 2010
Every night I have a program that runs that creates a natural gas report. In this report is something called "expert analysis." The is just text which is a commentary of the current Natural Gas market and because it's a volatile market there is new commentary every day. So also every day, an employee in our office runs a public webpage which displays this text, copies and pastes it into a webpage that is part of our system and it gets saved to a file which gets pulled into our nightly report.
The page that is in our system is as ASP page and it uses FileUp to create the file. We want to break our dependancy on FileUp (it's a SoftArtisans product, an excellent vendor, but we are trying to save some money). Right now we don't have FileUp because our trial expired. So every day I run the public webpage and copy the text and paste it to my expert.txt file all manually. Another problem is that the expert analysis is updated after our office staff has all gone home,
Here is my question - can I write a program in .NET that runs a page, parses the resulting HTML and extracts out the expert analysis all automatically? I won't need FileUp anymore becaus I can use the .NET upload control. And I won't have to log on every night to manually copy and paste the expert analysis. Is that what web/screen scraping is? What happens then the public page's format changes because they do maintenance on their site? Is it just like if I were to run [URL] and try to read the Moderator column of the ASP.NET forum? I'd be okay for a while (would I?) but then if the layout changed I wouldn't find the Moderator anymore?
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