sending mail from page to my GMail using Gmail smtp

I have an aspx page default.aspx with a master page. Inside it there is a form with some textbox controls with runat=server

and a submit button. In the code behind there is a handler for the button. but when I push the button on the page nothing happens.

I took the code from 4guysfromrolla : http://aspnet.4guysfromrolla.com/articles/072606-1.aspx  which is written in vb.net and converted it one2one to C#.

the vb code works fine, but mine doesn't, any idea why my button event doesn't fire?

should I post the whole code or any here?

 
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