Crawler for Deep-Web calling ASP.NET page

Introduction

I'm developing a web-crawler and I need get the return of ASP.NET forms. I know about the difficult to try that, but my crawler can get the return of PHP forms or languages like that. I'm using HtmlAgilityPack and call with POST parameters. That works fine.

Problem

My problem 开发者_如何学编程starts when I need crawler ASP.NET Forms, with a lot of hiddens fields and other the information (like __VIEWSTATE or __EVENTARGUMENT) for ASP.NET Kernel.

Question

How Can I put for my crawler send a POST call and receive the correct return with the data base filters? Somebody have information about that? Somebody tried something like that?

Thank's everybody. I'm waiting for a good response.