Question

How i can implement https login in asp.net and C#

Answer 1

I’m assuming you your ok with a normal login page. So for ssl buy your certificate and install http://www.instantssl.com/ssl-certificate-support/cert_installation/iis_ssl_certificate_5x.html

Then make sure you login page redirects to https rather than http.

        if (!Request.IsSecureConnection)
        {
            Response.Redirect(Request.Url.AbsoluteUri.ToLower().Replace("http", "https"), true);
        }