C#asp.net 发送邮件

            MailMessage mm = new MailMessage();
            mm.BodyFormat = System.Web.Mail.MailFormat.Html;
            mm.From = "这里填写发件人的邮箱 如:(***@163.com)";   
            mm.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpauthenticate", "1");
            mm.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendusername", "这里填写发件人的邮箱的账号,@前的内容");    
            mm.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendpassword", "这里填写发件人邮箱的密码");   
            mm.To = "这里则是填写收件人的邮箱";
            mm.Subject = "这里填写邮件的标题";
            mm.Body = "这里填写邮件内容";
            System.Web.Mail.SmtpMail.SmtpServer = "smtp.163.com";  //发件服务器名称
            try
            {
                System.Web.Mail.SmtpMail.Send(mm);  //发送邮件
            }
            catch (System.Exception err)
            {
                Response.Write(err.Message);
            }