在asp.net中获取电子邮件附件大小

using System.Net.Mail;

public static void GetEmailAttachmentSize(byte[] emailBytes)
{
    using (var ms = new MemoryStream(emailBytes))
    {
        var mailMessage = new MailMessage();
        mailMessage.Load(ms);

        foreach (var attachment in mailMessage.Attachments)
        {
            var contentDisposition = attachment.ContentDisposition;
            var fileName = contentDisposition.FileName;
            var size = attachment.ContentStream.Length;

            Console.WriteLine($"附件名称：{fileName}，大小：{size}字节");
        }
    }
}