There are many articles about data scraping, concerning returning an entire page or a particular element. Building on the base of the other articles, we will be using the grouping constructs to retrieve easily a list of headlines from Guardian Unlimited.
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One of the new additions in .NET is the ability to upload files without the need for additional components. The class HttpPostedFile deals with posted files. It has only a few members, but these cover anything you would want to do with and upload. Here is an example that hopefully demonstrates everything you need to know.
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