发送邮件发件人地址

嗨
我正在使用与我们联系"页面发送反馈.因为我正在emailid文本框中获取发件人地址，并且将passins作为参数.邮件运行正常，但是发件人地址却不是通过该参数获取的.

有人可以帮我解决这个问题吗?

这是我的代码

Hi
i am using contact us page to send feedback.In that i am getting the from address in emailid textbox and passins as parameter.Mail is working perfectly,but the from address is not getting by the parameter.

can anyone help me to solve this?

Here is my code

MailMessage mail = new MailMessage();
        mail.IsBodyHtml = true;
        mail.SubjectEncoding = System.Text.Encoding.UTF8;
        mail.BodyEncoding = System.Text.Encoding.UTF8;
        mail.Priority = MailPriority.High;
        string fromaddrs = @"fromadd@gmail.com";
        string to = @"toadd@gmail.com";
        mail.From = new MailAddress(fromaddrs);
         mail.To.Add(to);
        mail.Subject =subject;
        string body = "<table width="527" border="0" cellspacing="1" cellpadding="1">" +
                        "<tr>" +
                            "<td width="20%" height="20">Name: </td>" +
                            "<td width="80%">" + name + "</td>" +
                        "</tr>" +
                        "<tr>" +
                            "<td height="20">EmailId:</td>" +
                            "<td>" + emailid + "</td>" +
                        "</tr>" +
                        "<tr>" +
                            "<td height="20">MobileNo.:</td>" +
                            "<td>" + mobile + "</td>" +
                        "</tr>" +
                          "<tr>" +
                            "<td height="20">Address:</td>" +
                            "<td>" + address + "</td>" +
                        "</tr>" +
"<tr>" +
                            "<td height="20">Message:</td>" +
                            "<td>" + msg + "</td>" +
                        "</tr>" +
                        "</table>";
        mail.Body = body.ToString();
        SmtpClient smtpclt = new SmtpClient();
        smtpclt.Credentials = new System.Net.NetworkCredential(to, "*****");
        smtpclt.Port = 587;
        smtpclt.Host = "smtp.gmail.com";
        smtpclt.EnableSsl = true;
        smtpclt.DeliveryMethod = SmtpDeliveryMethod.Network;
        try
        {
            smtpclt.Send(mail);
            return 1;
        }
        catch (Exception error)
        {
            return -1;
        }