Question

我已经关注了一些有关如何将MailMessage转换为MIME字符串的StackOverflow帖子。到目前为止，我无法让它发挥作用。我已经解决了.NET 4.5中的所有错误和细节，但由于某种原因，我的字符串为空，我的流长度始终为0.任何帮助都将不胜感激。

致电功能：

MailMessage message = new MailMessage("from@domain.com", "to@domain.com", "Test", "Test");
Console.WriteLine(ConvertMailMessageToMemoryStream(message));

功能代码：

    private static string ConvertMailMessageToMemoryStream(MailMessage message)
    {
        BindingFlags flags = BindingFlags.Instance | BindingFlags.NonPublic;
        Assembly assembly = typeof(SmtpClient).Assembly;
        Type mailWriterType = assembly.GetType("System.Net.Mail.MailWriter");
        MemoryStream stream = new MemoryStream();
        ConstructorInfo mailWriterConstructor = mailWriterType.GetConstructor(flags, null, new[] { typeof(Stream) }, null);
        object mailWriter = mailWriterConstructor.Invoke(new object[] { stream });
        MethodInfo sendMethod = typeof(MailMessage).GetMethod("Send", flags);
        sendMethod.Invoke(message, flags, null, new[] { mailWriter, true, true }, null);
        var sr = new StreamReader(stream);
        var str = sr.ReadToEnd();
        MethodInfo closeMethod = mailWriter.GetType().GetMethod("Close", flags);
        closeMethod.Invoke(mailWriter, flags, null, new object[] { }, null);
        return str;
    }

Answer 1

在阅读之前，您必须先查找流。 stream.Seek(0, SeekOrigin.Begin) sendMethod将指针留在末尾，因此您无法从中读取任何内容。

MailMessage到MIME字符串

1 个答案: