从 C# 发送邮件时不显示正文消息

问题描述

我写了一个下面的代码来发送带有“LinkedResource”的邮件。它按照我们的要求工作正常，但没有显示正文消息。请检查下面的代码并告知为什么没有显示正文消息。

private void MailSend()
    {
        MailMessage Mail = new MailMessage();

        Mail.From = new MailAddress("[e-mail]");
        Mail.To.Add("[e-mail]");
        Mail.Subject = "This is Image Test.";
        Mail.Body = "This is the body of the email45454545";
        LinkedResource LinkedImage = new LinkedResource(@"D:\GatePass.JPG");
        LinkedImage.ContentId = "MyPic";
        //Added the patch for Thunderbird as suggested by Jorge
        LinkedImage.ContentType = new ContentType(MediaTypeNames.Image.Jpeg);

        AlternateView htmlView = AlternateView.CreatealternateViewFromString(
          "You should see image next to this line. <img src=cid:MyPic>",null,"text/html");

        htmlView.LinkedResources.Add(LinkedImage);
        Mail.AlternateViews.Add(htmlView);

        ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls;
        SmtpClient smtp = new SmtpClient("smtp.office365.com",587);
        try
        {
            //smtp.Send(Mail);
            smtp.EnableSsl = true;
            smtp.UseDefaultCredentials = true;
            smtp.Credentials = new System.Net.NetworkCredential("[e-mail]","xyz");
            smtp.TargetName = "STARTTLS/smtp.office365.com";
            smtp.Send(Mail);
        }
        catch (SmtpException ex)
        {
            //Logger.LogException(ex);
        }
    }

解决方法

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