It has nothing to do with ASP.NET. You need to use the class
System.Net.HttpWebRequest, but to obtain its instance you need to use the class
System.Net.WebRequest and its method
Create, as the run-time type is defined by the URI.
See:
http://msdn.microsoft.com/en-us/library/system.net.httpwebrequest.aspx[
^],
http://msdn.microsoft.com/en-us/library/system.net.webrequest.aspx[
^].
Find a code sample for login here:
http://stackoverflow.com/questions/450380/login-to-the-page-with-httpwebrequest[
^]; HTTPS protocol is used the same way, the code is the same but the root certificate should be registered on the system, see
certmgr.msc.
See also:
http://en.wikipedia.org/wiki/Public_key_certificate[
^],
http://en.wikipedia.org/wiki/Certificate_authority[
^],
http://en.wikipedia.org/wiki/Self-signed_certificate[
^] and links from these articles.
Now, parsing of the response…
The ideal case would be if the response provided well-formed XML, which is well supported by .NET parsers. If this is not the case, you can find some HTML parser which does not assume well-formed XML. Try this one:
http://www.majestic12.co.uk/projects/html_parser.php[
^], Google for some more.
—SA
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