问Umbraco电子邮件表单-丢失的发件人

EN

using System;
using System.Collections.Generic;
using System.Web;
using System.Web.Mvc;
using System.Net;
using System.Net.Mail;

public class BlogPostSurfaceController : Umbraco.Web.Mvc.SurfaceController
{
    public BlogPostSurfaceController() {

    }

    [HttpPost]
    public ActionResult CreateComment(CommentViewModel model)
    {    
        //model not valid, do not save, but return current Umbraco page
        if (!ModelState.IsValid)
        {
            //redirecting)          
            return CurrentUmbracoPage();
        }

        SendMail(model);

        //redirect to current page to clear the form
        return RedirectToCurrentUmbracoPage();
    }

    [HttpPost]
    public int SendMail(CommentViewModel model) {
        try{
                MailAddress from = new MailAddress(model.Email);
                MailAddress to  = new MailAddress("me@hotmail.com");
                MailMessage mail = new MailMessage(from, to);
                mail.Body = model.Message;

                SmtpClient SmtpServer = new SmtpClient("smtp.live.com");

                SmtpServer.Port = 587;
                SmtpServer.Credentials = new System.Net.NetworkCredential("me@hotmail.com", "password");
                SmtpServer.EnableSsl = true;

                SmtpServer.Send(mail);
            }
            catch(Exception ex) {
                return -1;
            }
        return 1;
    }
}