asp.net 邮件发送类

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.Mail;



/// <summary>

///mailhelper 的摘要说明

/// </summary>

public class mailhelper

{

    public mailhelper()

    {

        //

        //TODO: 在此处添加构造函数逻辑

        //

    }



    /// <summary>

    /// 邮件发送操作

    /// </summary>

    /// <param name="Addressee">收件人地址</param>

    /// <param name="From">发件人地址</param>

    /// <param name="sendpassword">发件人密码</param>

    /// <param name="Copy">抄送人地址</param>

    /// <param name="secret">密送人地址</param>

    /// <param name="Subject">发送主题</param>

    /// <param name="Attachment">附件信息</param>

    /// <param name="Body">邮件内容</param>

    public string SendeEmal(string Addressee, string From, string sendpassword, string Copy, string secret, string Subject, string Attachment, string Body)

    {

        MailMessage objMailMessage;

        MailAttachment objMailAttachment;





        // 创建邮件消息

        objMailMessage = new MailMessage();



        //发件人EMAIL

        objMailMessage.From = From;//源邮件地址



        //收件人EMAIL

        objMailMessage.To = Addressee; //目的邮件地址

        //邮件抄送

        objMailMessage.Cc = Copy;

        //邮件misong

        objMailMessage.Bcc = secret;





        //邮件主题

        objMailMessage.Subject = Subject; //发送邮件的标题



        //邮件内容

        objMailMessage.Body = Body;//发送邮件的内容



        // 创建一个附件对象

        if (Attachment != "")

        {

            objMailAttachment = new MailAttachment(Attachment);//发送邮件的附件 c:\\test.txt

            objMailMessage.Attachments.Add(objMailAttachment);//将附件附加到邮件消息对象中

        }



        //接着利用SMTP来发送邮件，需要使用Microsoft .NET Framework SDK v1.1和它以上的版本

        //基本权限

        objMailMessage.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpauthenticate", "1");

        //用户名

        string name = From.Substring(0, From.IndexOf('@'));

        objMailMessage.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendusername", name);

        //密码

        objMailMessage.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendpassword", sendpassword);

        //如果没有上述三行代码，则出现如下错误提示：服务器拒绝了一个或多个收件人地址。服务器响应为: 554 : Client host rejected: Access denied

        //SMTP地址      

        string smtp = "smtp." + From.Substring(From.IndexOf('@') + 1);

        SmtpMail.SmtpServer = "smtp." + From.Substring(From.IndexOf('@') + 1);

        //开始发送邮件



        try

        {

            SmtpMail.Send(objMailMessage);

            return "邮件发送成功！";

        }

        catch (System.Net.Mail.SmtpException ex)

        {

            return ex.Message;

        }

        //核心代码结束

    }

}