Webrequest and webresponse

I am using webrequest and webresponse in my application. I want to click o开发者_JAVA百科n a button same as webbrowser control and fill a textbox field. How can I do this from webrequest and webresponse?

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You cant do that, they just return you the response stream..

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I did a blog post on how to programmatically log into a website(I used Twitter in my example). This is basically what you want(filling in textboxes and submitting the information), if I understand your question correctly.

http://eclipsed4utoo.com/blog/log-website-programmatically/