构建DLL类库

Question

我尝试使用方法构建一个dll发送电子邮件，在另一个编程平台中使用（开放边缘 - 进度），但它不起作用，因为它显示错误0x80040154（类未注册）。为了构建我的dll项目，我使用了this tutorial：

贝娄，我班上的全部代码：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net.Mail;
using System.IO;
using System.Runtime.InteropServices;

namespace EnviaEmail
{
    [ComVisible(true)]
    [InterfaceType(ComInterfaceType.InterfaceIsDual), Guid("61495415-e035-4bc5-bc00-70e46c9766b8")]
    public interface IMailFunctions
    {
        void EnviaMail(string fromMail, string toMail, string bodyMail, string subjectMail, string attachmentsMail, string smtpMail);
    }

    [ComVisible(true)]
    [ClassInterface(ClassInterfaceType.None), Guid("0262794c-1858-40d8-90ca-cfe765913d3c")]
    public class clsEnviaEmail : IMailFunctions
    {

        public clsEnviaEmail(){}

        [ComVisible(true)]
        public void EnviaMail(string fromMail, string toMail, string bodyMail, string subjectMail, string attachmentsMail, string smtpMail)
        {

            string[] attachmentsSplit = attachmentsMail.Split(new Char[] { ',' });
            // Create the mail message
            MailMessage mail = new MailMessage();

            // Set the addresses
            mail.From = new MailAddress(fromMail);
            mail.CC.Add(toMail);

            // Set the content
            mail.Subject = subjectMail;
            mail.IsBodyHtml = true;
            mail.To.Add(toMail);

            foreach (string s in attachmentsSplit)
            {
                if (s.Trim() != "")
                    mail.Attachments.Add(new Attachment(s));
            }

            using (StreamReader reader = File.OpenText(bodyMail))
            {
                mail.Body = reader.ReadToEnd();
            }

            // Send the message
            SmtpClient smtp = new SmtpClient(smtpMail);
            smtp.Send(mail);
        }
    }
}

有什么想法吗？