Dear Friends,
I need to write the follwing C# code:

1. Go to some webpage http://www.whatever.com
2. On this page I need to put "somestring1" into textbox
<input type="text" name="SomeTextBox" value="">
3. Get value from this hidden variable (in this example - 23456):
<input type="hidden" id="SomeVariable" name="SomeVariable" value="23456">
4. And finaly invoke some "submit":
<input type="submit" id="MySubmit" name="MySubmit" value="MySubmit">
so the form will be submited somewhere <form action="someurl" ...>

Please advice.
Thanks.