使用C#发送带有23 MB附件的电子邮件 [英] Send Email with attachment of 23 MBusing C#

问题描述

你好，


我发送的电子邮件带有22 MB的附件，并且代码最终出现错误，即操作超时".此代码适用于1 MB的文件.

这是ME使用的代码:

Hello,


I am sending email with an attachment of 22 MB and code ends up with an error i,e " The operation was time-out". This code works fine with files of 1 MB.

Here is the code used by ME :

try
{
    mail = new MailMessage();
    mail.To.Add(ConfigurationManager.AppSettings["PaypalEmail2"].ToString());
    mail.From = new MailAddress("[e-mail]");
    mail.Subject = "File Downloaded to VAM";
    mail.Body = "Name : " + txtName.Text + "\n Contact Details : " + txtPhone.Text + "\n Email ID :" + txtEmail.Text + "\n";
    mail.IsBodyHtml = true;

    if (flpFile.HasFile)
    {
        mail.Attachments.Add(new Attachment(flpFile.PostedFile.InputStream, flpFile.FileName));
    }
    smtp = new SmtpClient();
    smtp.Host = "smtp.gmail.com";
    smtp.Credentials = new System.Net.NetworkCredential("[e-mail]", "sample");
    smtp.EnableSsl = true;
    smtp.Send(mail);

    txtEmail.Text = txtName.Text = txtPhone.Text = string.Empty;
}
catch (Exception ex)
{
          // so something 
}
finally
{
    mail = null;
    smtp = null;
}

有任何建议吗?

Any suggestions ?

推荐答案

我认为超时是因为您直接访问PostedFile输入流.
您是否已先尝试将文件加载到MemoryStream中，并且已读取所有内容，然后使用填充的MemoryStream发送电子邮件?

我从未发送过这么大的电子邮件，但这应该不是问题(请确保您的电子邮件提供商和收件人提供商必须支持如此大的文件).

希望这会有所帮助！

致以诚挚的问候，祝您编程愉快，
克里斯

Hi,

I think the timeout is because you directly access the PostedFile input stream.
Did you already tried first to load the file into a MemoryStream and if everything was read you send the email using the filled MemoryStream?

I never sent emails this big, but this should not be a problem (sure, your Email provider and the recipient provider must support such big files).

Hope this helps!

Best regards and happy coding,
Chris

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