.net写的Email可以群发邮件小程序（应网友要求写一个支持群发）

//同樣引入using System.Net.Mail;//在這裡我們在page_load時就發郵件protected void Page_Load(object sender, EventArgs e){        string strAllEmail = "sdf,sdf,sdf,";//this.txtAllEmail.Text;        string[] strEachEmail = strAllEmail.Split(',');        int i_max=strEachEmail.Length;        int i;        for (i = 0; i < i_max;i++ )            SendEmail(strEachEmail[i].ToString()); }//要調用的發送函數    private SendEmail(string astrEachEmail)       {        //发送        string strSendEmail = "發送者郵件地址";        string strUserName = "申請人用戶名";        string strPassWord = "申請人密碼";        string strRecieveEMail = astrEachEmail;//"接收者郵件地址"        string strSubject = "主題";        string strBody = "內容";        System.Net.Mail.MailMessage msg = new System.Net.Mail.MailMessage();        msg.To.Add(strRecieveEMail);        附件處理        //if (txtAttachment.Text.Trim().Length > 0)        //{        //    string FileName = @txtAttachment.Text.Trim();        //    System.Net.Mail.Attachment pAttachment = new Attachment(FileName);        //    msg.Attachments.Add(pAttachment);        //}        msg.From = new MailAddress(strSendEmail) ;                msg.Subject = strSubject;//邮件标题                     msg.SubjectEncoding = System.Text.Encoding.UTF8;//邮件标题编码         msg.Body = strBody;//邮件内容         msg.BodyEncoding = System.Text.Encoding.UTF8;//邮件内容编码         msg.IsBodyHtml = false;//是否是HTML邮件         msg.Priority = MailPriority.High;//邮件优先级

        SmtpClient client = new SmtpClient();        client.Host = txtSmtp.Text.Trim();//为邮件服务器设置        System.Net.NetworkCredential basicAuthenticationInfo = new System.Net.NetworkCredential(strUserName, strPassWord);        client.Credentials = basicAuthenticationInfo;

        object userState = msg;        try        {            client.Send(msg);            //client.SendAsync(msg, userState);//简单一点儿可以client.Send(msg);             Response.Write("成功发送到" + strRecieveEMail + "邮箱");        }        catch (System.Net.Mail.SmtpException ex)        {            Response.Write("发送邮件" + strRecieveEMail + "出错");            throw ex;        }    }