C#.NET发送邮件的实例代码

using System;
using System.Collections.Generic;
using System.Text;
using System.Net.Mail;
using System.Net;
namespace MyQuery.Utils
{
 /// <summary>
 /// 封装邮件处理
 /// by 贾世义 2011-6-3
 /// </summary>
 public static class MailHelper
 {
 private static string smtpHost = null;
 private static int smptPort = 25;
 private static bool smtpIsUserCredentials = false;
 private static string smtpCredentialAccount = null;
 private static string smtpCredentialPassword = null;
 /// <summary>
 /// 设置发送邮件参数
 /// </summary>
 /// <param name="host">smtp服务器地址或名称</param>
 /// <param name="port">smtp服务端口 一般为25</param>
 /// <param name="isUserCredentials">是否需要认证</param>
 /// <param name="account">需要认证时的用户</param>
 /// <param name="password">需要认证时的用户的密码</param>
 public static void SetParameters(string host, int port, bool isUserCredentials, string account, string password)
 {
 smtpHost = host;
 smptPort = port;
 smtpIsUserCredentials = isUserCredentials;
 smtpCredentialAccount = account;
 smtpCredentialPassword = password;
 }
 /// <summary>
 /// 设置发送邮件参数 取配置
 /// </summary>
 private static void setParameters()
 {
 if (String.IsNullOrEmpty(smtpHost))
 {
 smtpHost = WebHelper.GetAppConfig("SmtpHost");
 smptPort = DataHelper.GetIntValue(WebHelper.GetAppConfig("SmptPort"), 25);
 smtpIsUserCredentials = Constants.TRUE_ID.Equals(WebHelper.GetAppConfig("SmtpIsUserCredentials"));
 smtpCredentialAccount = WebHelper.GetAppConfig("SmtpCredentialAccount");
 smtpCredentialPassword = WebHelper.GetAppConfig("SmtpCredentialPassword");
 }
 }
 /// <summary>
 /// 发送邮件 发送邮件错误不会抛出异常
 /// </summary>
 /// <param name="receivers">收件人</param>
 /// <param name="title">标题/主题</param>
 /// <param name="content">信件内容</param>
 /// <param name="sender">发件人 空则取系统配置</param>
 public static void SendMail(string receivers, string title, string content, string sender)
 {
 if (!String.IsNullOrEmpty(receivers))
 {
 //初始化参数
 setParameters();
 if (!String.IsNullOrEmpty(smtpHost))
 {
 try
 {
 SmtpClient smtp = new SmtpClient(smtpHost, smptPort);
 if (smtpIsUserCredentials)
 {
 smtp.UseDefaultCredentials = true;
 smtp.Credentials = new NetworkCredential(smtpCredentialAccount, smtpCredentialPassword); ;
 }
 smtp.DeliveryMethod = SmtpDeliveryMethod.Network;
 if (String.IsNullOrEmpty(sender))
 {
 sender = smtpCredentialAccount;
 }
 foreach (string receiver in DataHelper.GetStrings(receivers))
 {
 MailMessage msg = new MailMessage(sender, receiver, title, content);
 msg.BodyEncoding = Encoding.UTF8;
 msg.SubjectEncoding = Encoding.UTF8;
 msg.IsBodyHtml = true;
 smtp.Send(msg);
 msg.Dispose();
 }
 }
 catch { }
 }
 }
 }
 }
}

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