准备工作：
从C:WindowsSystem32将Codosys.dll拷到你的项目里，然后引用，或者直接引用Com组件也可以
然后看代码
代码语言：javascript复制 ///<summary>
/// 构造函数
///</summary>
///<param name="strserver">发件箱的邮件服务器地址</param>
///<param name="strtoMail">收件人地址（可以是多个收件人，程序中是以“;"进行区分的）</param>
///<param name="strfromMail">发件人地址</param>
///<param name="strsubject">邮件标题</param>
///<param name="stremailBody">邮件内容（可以以html格式进行设计）</param>
///<param name="strpassword">发件人邮箱密码</param>
///<param name="intport">发送邮件所用的端口号（htmp协议默认为25）</param>
///<param name="blnsslEnable">true表示对邮件内容进行socket层加密传输，false表示不加密</param>
/// <param name="strCC">抄送人</param>
/// <param name="files">附件</param>
public static void SendMyEmailByCDO(string strserver,
string strtoMail,
string strfromMail,
string strsubject,
string stremailBody,
string strpassword,
int intport,
bool blnsslEnable, string strCC, List<string> files)
{
string yourEmail = strfromMail;
CDO.Message message = new CDO.Message();
CDO.IConfiguration configuration = message.Configuration;
ADODB.Fields fields = configuration.Fields;
Console.WriteLine(String.Format("Configuring CDO settings..."));
ADODB.Field field = fields["http://schemas.microsoft.com/cdo/configuration/smtpserver"];
field.Value = strserver;
field = fields["http://schemas.microsoft.com/cdo/configuration/smtpserverport"];
field.Value = intport;
field = fields["http://schemas.microsoft.com/cdo/configuration/sendusing"];
field.Value = CDO.CdoSendUsing.cdoSendUsingPort;
field = fields["http://schemas.microsoft.com/cdo/configuration/smtpauthenticate"];
field.Value = CDO.CdoProtocolsAuthentication.cdoBasic;
field = fields["http://schemas.microsoft.com/cdo/configuration/sendusername"];
field.Value = yourEmail;
field = fields["http://schemas.microsoft.com/cdo/configuration/sendpassword"];
field.Value = strpassword;
field = fields["http://schemas.microsoft.com/cdo/configuration/smtpusessl"];
field.Value = blnsslEnable.ToString().ToLower();
fields.Update();
Console.WriteLine(String.Format("Building CDO Message..."));
message.From = yourEmail;
message.To = strtoMail;
message.Subject = strsubject;
if (!string.IsNullOrEmpty(strCC))
{
message.CC = strCC;
}
message.HTMLBody = stremailBody;
if (files != null)
{
foreach (string item in files)
{
message.AddAttachment(item);
}
}
Console.WriteLine(String.Format("Attempting to connect to remote server..."));
// Send message.
message.Send();
}
