C#.NET发送EMAIL的几种方法

C#.NET发送EMAIL的常用几种方法 MailMessage/SmtpClient/CDO.Message

using System;

using System.Collections.Generic;

using System.Text;

using System.Web;

using System.Net.Mail;

using System.Net;

namespace Pub.Class

{

/// <summary>

/// 发送Email类

/// </summary>

public class Email

{

#region 私有成员

private static object lockHelper = new object();

private string _From;

private string _FromEmail;

private string _Subject;

private string _Body;

private string _SmtpServer;

private string _SmtpPort = "25";

private string _SmtpUserName;

private string _SmtpPassword;

private System.Web.Mail.MailFormat _Format = System.Web.Mail.MailFormat.Html;

private System.Text.Encoding _Encoding = System.Text.Encoding.Default;

#endregion

#region 属性

/// <summary>

/// 正文内容类型

/// </summary>

public System.Web.Mail.MailFormat Format { set { _Format = value; } }

/// <summary>

/// 正文内容编码

/// </summary>

public System.Text.Encoding Encoding { set { _Encoding = value; } }

/// <summary>

/// FromEmail 发送方地址(如test@163.com)

/// </summary>

public string FromEmail { set { _FromEmail = value; } }

/// <summary>

/// From

/// </summary>

public string From { set { _From = value; } }

/// <summary>

/// 主题

/// </summary>

public string Subject { set { _Subject = value; } }

/// <summary>

/// 内容

/// </summary>

public string Body { set { _Body = value; } }

/// <summary>

/// SmtpServer

/// </summary>

public string SmtpServer { set { _SmtpServer = value; } }

/// <summary>

/// SmtpPort

/// </summary>

public string SmtpPort { set { _SmtpPort = value; } }

/// <summary>

/// SmtpUserName

/// </summary>

public string SmtpUserName { set { _SmtpUserName = value; } }

/// <summary>

/// SmtpPassword

/// </summary>

public string SmtpPassword { set { _SmtpPassword = value; } }

#endregion

#region 构造器

/// <summary>

/// 构造器

/// </summary>

public Email() { }

#endregion

#region Send

/// <summary>

/// 发送EMAIL

/// </summary>

/// <example>

/// <code>

/// Email _Email = new Email();

/// _Email.FromEmail = "test@163.com";

/// _Email.Subject = "<div>aaaa</div>";

/// _Email.Body = "aaaaaaaaaaaaa";

/// _Email.SmtpServer = "smtp.163.com";

/// _Email.SmtpUserName = "aaa";

/// _Email.SmtpPassword = "aaa";

/// _Email.Send("test@163.com");

/// </code>

/// </example>

/// <param name="toEmail">收信人 接收方地址</param>

/// <returns>成功否</returns>

public bool SmtpMailSend(string toEmail) {

lock (lockHelper) {

System.Web.Mail.MailMessage msg = new System.Web.Mail.MailMessage();

try {

msg.From = _FromEmail;//发送方地址(如test@163.com)

msg.To = toEmail;//接收方地址

msg.BodyFormat = _Format;//正文内容类型

msg.BodyEncoding = _Encoding;//正文内容编码

msg.Subject = _Subject;//主题

msg.Body = _Body;//内容

msg.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpauthenticate", "1");//设置为需要用户验证

if (!_SmtpPort.Equals("25")) msg.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpserverport", _SmtpPort);//设置端口

msg.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendusername", _SmtpUserName);//设置验证用户名

msg.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendpassword", _SmtpPassword);//设置验证密码

System.Web.Mail.SmtpMail.SmtpServer = _SmtpServer;//邮件服务器地址(如smtp.163.com)

System.Web.Mail.SmtpMail.Send(msg);//发送

return true;

} catch { } finally {



}

}

return false;

}

/// <summary>

/// 发送EMAIL

/// </summary>

/// <param name="toEmail">Email</param>

/// <returns>是否成功</returns>

public bool CDOMessageSend(string toEmail) {

lock (lockHelper) {

CDO.Message bjMail = new CDO.Message();

try {

objMail.To = toEmail;

objMail.From = _FromEmail;

objMail.Subject = _Subject;

if (_Format.Equals(System.Web.Mail.MailFormat.Html)) objMail.HTMLBody = _Body; else objMail.TextBody = _Body;

//if (!_SmtpPort.Equals("25")) objMail.Configuration.Fields[".Value]http://schemas.microsoft.com/cdo/configuration/smtpserverport"].Value= _SmtpPort; //设置端口

objMail.Configuration.Fields[".Value]http://schemas.microsoft.com/cdo/configuration/smtpserver"].Value= _SmtpServer;

objMail.Configuration.Fields[".Value]http://schemas.microsoft.com/cdo/configuration/sendusing"].Value= 1;

objMail.Configuration.Fields[".Value]http://schemas.microsoft.com/cdo/configuration/smtpconnectiontimeout"].Value= 10;

objMail.Configuration.Fields.Update();

objMail.Send();

return true;

} catch {} finally{



}

System.Runtime.InteropServices.Marshal.ReleaseComObject(objMail);

bjMail = null;

}

return false;

}

/// <summary>

/// CDOMessageSend

/// </summary>

/// <param name="toEmail"></param>

/// <param name="sendusing"></param>

/// <returns></returns>

public bool CDOMessageSend(string toEmail,int sendusing) {

lock (lockHelper) {

CDO.Message bjMail = new CDO.Message();

try {

objMail.To = toEmail;

objMail.From = _FromEmail;

objMail.Subject = _Subject;

if (_Format.Equals(System.Web.Mail.MailFormat.Html)) objMail.HTMLBody = _Body; else objMail.TextBody = _Body;

if (!_SmtpPort.Equals("25")) objMail.Configuration.Fields[".Value]http://schemas.microsoft.com/cdo/configuration/smtpserverport"].Value= _SmtpPort; //设置端口

objMail.Configuration.Fields[".Value]http://schemas.microsoft.com/cdo/configuration/smtpserver"].Value= _SmtpServer;

objMail.Configuration.Fields[".Value]http://schemas.microsoft.com/cdo/configuration/sendusing"].Value= sendusing;

objMail.Configuration.Fields[".Value]http://schemas.microsoft.com/cdo/configuration/sendemailaddress"].Value= _FromEmail;

objMail.Configuration.Fields[".Value]http://schemas.microsoft.com/cdo/configuration/smtpuserreplyemailaddress"].Value= _FromEmail;

objMail.Configuration.Fields[".Value]http://schemas.microsoft.com/cdo/configuration/smtpaccountname"].Value= _SmtpUserName;

objMail.Configuration.Fields[".Value]http://schemas.microsoft.com/cdo/configuration/sendusername"].Value= _SmtpUserName;

objMail.Configuration.Fields[".Value]http://schemas.microsoft.com/cdo/configuration/sendpassword"].Value= _SmtpPassword;

objMail.Configuration.Fields[".Value=1]http://schemas.microsoft.com/cdo/configuration/smtpauthenticate"].Value=1;

objMail.Configuration.Fields.Update();

objMail.Send();

return true;

} catch { } finally{



}

System.Runtime.InteropServices.Marshal.ReleaseComObject(objMail);

bjMail = null;

}

return false;

}

/// <summary>

/// SmtpClientSend

/// </summary>

/// <param name="toEmail"></param>

/// <returns></returns>

public bool SmtpClientSend(string toEmail) {

lock (lockHelper) {

System.Net.Mail.MailMessage message = new MailMessage(_FromEmail, toEmail, _Subject, _Body);

message.SubjectEncoding = _Encoding;

message.BodyEncoding = _Encoding;

message.IsBodyHtml = true;

message.Priority = MailPriority.High;

SmtpClient client = new SmtpClient(_SmtpServer);

client.UseDefaultCredentials = false;

client.Credentials = new NetworkCredential(_SmtpUserName, _SmtpPassword);

client.DeliveryMethod = SmtpDeliveryMethod.Network;

client.Port = Str.ToInt(_SmtpPort, 587);

client.EnableSsl = true;

try {

client.Send(message);

} catch {

return false;

}

return true;

}

}

#endregion

}

}