使用MailMessage和SmtpClient类实现asp.net的邮件发送(有详细注释并已测试通过) ...

OStack程序员社区-中国程序员成长平台 › 门户 › 编程› ASP.NET›ASP.NET编程经验

原作者: [db:作者] 来自: [db:来源] 收藏邀请

1. MailMessage类主要是用于获取邮件相关信息

2. SmtpClient类主要用于同步或异步发送邮件

Html代码如下：

代码

后台代码如下：

代码

  protected void Button1_Click(object sender, EventArgs e)
    {
        SendEmail();
    }

    public void SendEmail()
    {
        string from = "[email protected]";   //发送方邮箱
        string subject = "测试邮件";  //标题

        MailMessage newEmail = new MailMessage();

        #region 发送方邮件
        newEmail.From = new MailAddress(from, from);
        #endregion

        #region 发送对象，可群发
        newEmail.To.Add(new MailAddress("[email protected]"));  //接收方邮箱一
        newEmail.To.Add(new MailAddress("[email protected]"));  //接收方邮箱二
        #endregion

        #region Subject
        newEmail.Subject = subject;  //标题
        #endregion

        #region Body
        string strBody = "<p><b>这里是内容</b></p>"; //html格式，也可以是普通文本格式
        newEmail.Body = strBody;  //内容
        #endregion

        #region 附件
        Attachment MsgAttach = new Attachment(this.FileUpload1.PostedFile.FileName);//可通过一个FileUpload地址获取附件地址
        newEmail.Attachments.Add(MsgAttach);
        #endregion

        #region Deployment
        newEmail.IsBodyHtml = true;                //是否支持html
        newEmail.Priority = MailPriority.Normal;  //优先级
        #endregion

        //发送方服务器信息
        SmtpClient smtpClient = new SmtpClient();
        smtpClient.UseDefaultCredentials = true;
        smtpClient.Credentials = new System.Net.NetworkCredential("发送方邮箱地址:如[email protected]", "发送方邮箱密码:如123");
        smtpClient.Host = "smtp.163.com"; //主机

        //smtpClient.Send(newEmail);   //同步发送,程序将被阻塞

        #region 异步发送, 会进入回调函数SendCompletedCallback，来判断发送是否成功
        smtpClient.SendCompleted += new SendCompletedEventHandler(SendCompletedCallback);//回调函数
        string userState = "测试";
        smtpClient.SendAsync(newEmail, userState);
        #endregion

    }

    private static void SendCompletedCallback(object sender, System.ComponentModel.AsyncCompletedEventArgs e)
    {
        if (e.Cancelled)  //邮件发送被取消
        {

        }
        if (e.Error != null)   //邮件发送失败
        {

        }
        else   //发送成功
        {

        }
    }

异步发送必须在：<%@ Page%>添加Async="true"