c# - 在 C# 中的邮件正文中附加图像

Question

如何在正文内容中附加图像。我写了下面的代码

System.Net.Mail.MailMessage message = new System.Net.Mail.MailMessage();
string UserName = "xyz@someorg.com";
string Password = "my password";
message.To.Add(new System.Net.Mail.MailAddress("toaddress@toadddress.com"));
message.From = new  System.Net.Mail.MailAddress("fromaddress@fromaddress.com");              
message.Subject = "test subject";
message.Body = "<img src=@'C:\\Sunset.jpg'/>";                
message.IsBodyHtml = true;
System.Net.Mail.SmtpClient smtpClient = new System.Net.Mail.SmtpClient();
 smtpClient.Host = "hostname";
 smtpClient.Port = 25;
 smtpClient.Credentials = new System.Net.NetworkCredential(UserName, Password);
 smtpClient.Send(message);

代码没问题，因为我也收到了消息，但图像在正文中显示为 [X]，而不是图像。如何解决这个问题？路径是否正确？

Answer 1

    string attachmentPath = Environment.CurrentDirectory + @"\test.png";
    Attachment inline = new Attachment(attachmentPath);
    inline.ContentDisposition.Inline = true;
    inline.ContentDisposition.DispositionType = DispositionTypeNames.Inline;
    inline.ContentId = contentID;
    inline.ContentType.MediaType = "image/png";
    inline.ContentType.Name = Path.GetFileName(attachmentPath);

    message.Attachments.Add(inline);

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引用:Send an Email in C# with Inline attachments