Problem in sending email (From Email address)

Hi,
I am sending the information I collected from my 'Contact Us' page to my email which is supported by google apps. 

When I receive the email from the website I want to see the email id of the sender in FROM which was entered in txtEmail.Text.

 m.From = new System.Net.Mail.MailAddress(txtEmail.Text, txtName.Text);

But this is not happening. When I receive the email in From, I am getting "[email protected]". 
How can I correct it?

              System.Net.NetworkCredential c = new System.Net.NetworkCredential();
              c.Password = "my_Credential_Password";
              c.UserName = "[email protected]";
              System.Net.Mail.MailMessage m = new System.Net.Mail.MailMessage();

             m.From = new System.Net.Mail.MailAddress(txtEmail.Text, txtName.Text);

              m.To.Add("[email protected]");
              m.Headers.Add("Reply-To", txtEmail.Text);
              m.Subject = "My Website Enquiry: " + txtSubject.Text;
              m.Body = txtBody.Text;
              m.IsBodyHtml = false;
              System.Net.Mail.SmtpClient s = new System.Net.Mail.SmtpClient();
              s.UseDefaultCredentials = false;
              s.Credentials = c;
              s.DeliveryMethod = System.Net.Mail.SmtpDeliveryMethod.Network;
              s.EnableSsl = true;
              s.Port = 587;
              s.Host = "smtp.gmail.com";
              s.Send(m);

Thanks,