Upload files with HTTPWebrequest (multipart/form-data)

Question

Is there any class, library or some piece of code which will help me to upload files with HTTPWebrequest?

Edit 2:

I do not

Answer 1

My ASP.NET Upload FAQ has an article on this, with example code: Upload files using an RFC 1867 POST request with HttpWebRequest/WebClient. This code doesn't load files into memory (as opposed to the code above), supports multiple files, and supports form values, setting credentials and cookies, etc.

Edit: looks like Axosoft took down the page. Thanks guys.

It's still accessible via archive.org.