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C # web crawler

Source: Internet
Author: User
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Today, I studied the web crawler of C #, probably using three ways: webbrowser,webclient,httpwebrequest

The speed of the webbroswer is quite slow, but some operations can be performed, such as simulating clicks and so on;

WebClient is simple and easy to use, but not highly flexible. You cannot download a webpage that requires authentication just tried, there is a crawl to get the page and the content of this page is in line with the phenomenon, and now has not found the problem

HttpWebRequest complex, high flexibility. This method is used for Web pages that require authentication.

C # web crawler

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