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C#中邮件发送的函数(使用SMTP)

原作者: [db:作者] 来自: [db:来源] 收藏 邀请

在C#中通过SMTP服务器发送邮件,几个常用的函数

/*=============================================================
* Send Mail Helper
* Author : Danny,Li
* E-mail : [email protected]
* Edition: V-101014
*=============================================================
*/
using System;
using System.Collections.Generic;
using System.Text;

namespace IRCommon
{
public class MailHelper
{
#region 从web.config中取得发送邮件参数
//SMTP服务器
public static string MailSmtpServer
{
get { return System.Configuration.ConfigurationManager.AppSettings["mailSmtpServer"]; }
}

//系统发件地址
public static string MailServerFrom
{
get { return System.Configuration.ConfigurationManager.AppSettings["MailServerFrom"]; }
}

//系统调试时收件地址
public static string DebugMail
{
get
{
if (string.IsNullOrEmpty(System.Configuration.ConfigurationManager.AppSettings["debugMail"]))
return string.Empty;
else
return System.Configuration.ConfigurationManager.AppSettings["debugMail"];
}
}
#endregion

/// <summary>
/// 私有构造方法,不允许创建实例
/// </summary>
private MailHelper()
{
// TODO: Add constructor logic here
}

/// <summary>
/// SendNetMail(须配置SMTP服务器地址)(多个收件人、抄送人、附件其参数用";"隔开,最后一个不能有";")
/// </summary>
/// <param name="mailFrom">发件人</param>
/// <param name="mailTo">收件人(多个收件人用";"隔开,最后一个不能有";")</param>
/// <param name="mailSubject">主题</param>
/// <param name="mailBody">内容</param>
/// <param name="mailAttch">附件(多个附件用";"隔开,最后一个不能有";")</param>
/// <param name="mailCode">密码(对加密过的)</param>
/// <param name="mailPriority">优先级</param>
/// <param name="mailCC">抄送(多个抄送人用";"隔开,最后一个不能有";")</param>
/// <param name="resultMessage">输出信息</param>
public static void SendNetMail(string mailFrom, string mailTo, string mailSubject, string mailBody, string mailAttch, string mailCode, string mailPriority, string mailCC, out string resultMessage)
{
//初始化输出参数
resultMessage = "";
//发件人和收件人不为空
if (string.IsNullOrEmpty(mailFrom) || string.IsNullOrEmpty(mailTo))
{
resultMessage
= "Please Fill Email Addresser Or Addressee . ";
return;
}

System.Net.Mail.MailMessage email
= new System.Net.Mail.MailMessage();
System.Net.Mail.MailAddress emailFrom
= new System.Net.Mail.MailAddress(mailFrom);
//发件人
email.From = emailFrom;
//收件人
if (string.IsNullOrEmpty(DebugMail))
{
string[] toUsers = mailTo.Split(';');
foreach (string to in toUsers)
email.To.Add(to);
}
else
{
email.To.Add(DebugMail);
mailSubject
+= "(MailTo " + mailTo + ")";
}
//抄送
if (string.IsNullOrEmpty(DebugMail))
{
if (!string.IsNullOrEmpty(mailCC))
{
string[] ccUsers = mailCC.Split(';');
foreach (string cc in ccUsers)
email.CC.Add(cc);
}
}
else
{
if (!string.IsNullOrEmpty(mailCC))
mailSubject
+= "(MailCC " + mailCC + ")";
}
//主题
email.Subject = mailSubject;
//内容
email.Body = mailBody;
//附件
if (!string.IsNullOrEmpty(mailAttch))
{
string[] attachments = mailAttch.Split(';');
foreach (string file in attachments)
{
System.Net.Mail.Attachment attach
= new System.Net.Mail.Attachment(file, System.Net.Mime.MediaTypeNames.Application.Octet);
//为附件添加发送时间
System.Net.Mime.ContentDisposition disposition = attach.ContentDisposition;
disposition.CreationDate
= System.IO.File.GetCreationTime(file);
disposition.ModificationDate
= System.IO.File.GetLastWriteTime(file);
disposition.ReadDate
= System.IO.File.GetLastAccessTime(file);
//添加附件
email.Attachments.Add(attach);
}
}
//优先级
email.Priority = (mailPriority == "High") ? System.Net.Mail.MailPriority.High : System.Net.Mail.MailPriority.Normal;
//内容编码、格式
email.BodyEncoding = System.Text.Encoding.UTF8;
email.IsBodyHtml
= true;
//SMTP服务器
System.Net.Mail.SmtpClient client = new System.Net.Mail.SmtpClient(MailSmtpServer);

//验证(Credentials 凭证)
client.Credentials = new System.Net.NetworkCredential(mailFrom, mailCode);

//处理待发的电子邮件的方法 (Delivery 发送,传输)
client.DeliveryMethod = System.Net.Mail.SmtpDeliveryMethod.Network;

try
{
//发送邮件
client.Send(email);
resultMessage
= "Your E-mail Send Success .";
}
catch (Exception ex)
{
resultMessage
= "Your E-mail Send Faile And Bring Error :" + ex.Message;
}
}

/// <summary>
/// SendNetMail(密码需配置)(多个收件人、抄送人、附件其参数用";"隔开,最后一个不能有";")
/// web.config配置如下(配置同<system.web>接点并列于同一级):
/// <system.net>
/// <mailSettings>
/// <smtp from="[email protected]">
/// <network host="smtp.163.com" password="a1984c11d13" userName="yangxiangwen789" />
/// </smtp>
/// </mailSettings>
/// </system.net>
/// </summary>
/// <param name="mailFrom">发件人</param>
/// <param name="mailTo">收件人(多个收件人用";"隔开,最后一个不能有";")</param>
/// <param name="mailSubject">主题</param>
/// <param name="mailBody">内容</param>
/// <param name="mailAttch">附件(多个附件用";"隔开,最后一个不能有";")</param>
/// <param name="mailPriority">优先级</param>
/// <param name="mailCC">抄送(多个抄送人用";"隔开,最后一个不能有";")</param>
/// <param name="resultMessage">输出信息</param>
public static void SendNetMail(string mailFrom, string mailTo, string mailSubject, string mailBody, string mailAttch, string mailPriority, string mailCC, out string resultMessage)
{
//初始化输出参数
resultMessage = "";
//发件人和收件人不为空
if (string.IsNullOrEmpty(mailFrom) || string.IsNullOrEmpty(mailTo))
{
resultMessage
= "Please Fill Email Addresser Or Addressee . ";
return;
}

System.Net.Mail.MailMessage email
= new System.Net.Mail.MailMessage();

//发件人
email.From = new System.Net.Mail.MailAddress(mailFrom);
//收件人
if (string.IsNullOrEmpty(DebugMail))
{
string[] toUsers = mailTo.Split(';');
foreach (string to in toUsers)
email.To.Add(to);
}
else
{
email.To.Add(DebugMail);
mailSubject
+= "(MailTo " + mailTo + ")";
}
//抄送
if (string.IsNullOrEmpty(DebugMail))
{
if (!string.IsNullOrEmpty(mailCC))
{
string[] ccUsers = mailCC.Split(';');
foreach (string cc in ccUsers)
email.CC.Add(cc);
}
}
else
{
if (!string.IsNullOrEmpty(mailCC))
mailSubject
+= "(MailCC " + mailCC + ")";
}
//主题
email.Subject = mailSubject;
//内容
email.Body = mailBody;
//优先级
email.Priority = (mailPriority == "High") ? System.Net.Mail.MailPriority.High : System.Net.Mail.MailPriority.Normal;
//附件
if (!string.IsNullOrEmpty(mailAttch))
{
string[] attachments = mailAttch.Split(';');
foreach (string file in attachments)
{
System.Net.Mail.Attachment attach
= new System.Net.Mail.Attachment(file, System.Net.Mime.MediaTypeNames.Application.Octet);
//为附件添加发送时间
System.Net.Mime.ContentDisposition disposition = attach.ContentDisposition;
disposition.CreationDate
= System.IO.File.GetCreationTime(file);
disposition.ModificationDate
= System.IO.File.GetLastWriteTime(file);
disposition.ReadDate
= System.IO.File.GetLastAccessTime(file);
//添加附件
email.Attachments.Add(attach);
}
}
//内容编码
email.BodyEncoding = System.Text.Encoding.UTF8;
email.IsBodyHtml
= true;

System.Net.Mail.SmtpClient sc
= new System.Net.Mail.SmtpClient();
try
{
//发送邮件
sc.Send(email);
resultMessage
= "Your E-mail Send Success .";
}
catch (Exception ex)
{
resultMessage
= "Your E-mail Send Faile And Bring Error :" + ex.Message;
}
}

}
}

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