c# – 从字节数组中获取要作为附件发送的文件

>首先使用SSRS从Web服务的报告中读取
>将文件读入内存而不是保存到服务器或客户端
>将MemoryStream对象直接发送到电子邮件服务器.

Reporting services: Get the PDF of a generated report
How to send an email with attachments using SmtpClient.SendAsync?

string strReportUser = "RSUserName";
string strReportUserPW = "MySecretPassword";
string strReportUserDomain = "DomainName";

string sTargetURL = "http://SqlServer/ReportServer?" +
   "/MyReportFolder/Report1&rs:Command=Render&rs:format=PDF&ReportParam=" +
   ParamValue;

HttpWebRequest req =
      (HttpWebRequest)WebRequest.Create( sTargetURL );
req.PreAuthenticate = true;
req.Credentials = new System.Net.NetworkCredential(
    strReportUser,strReportUserPW,strReportUserDomain );

HttpWebResponse HttpWResp = (HttpWebResponse)req.GetResponse();

Stream fStream = HttpWResp.GetResponseStream();

HttpWResp.Close();



//Now turn around and send this as the response..
ReadFullyAndSend( fStream );

ReadFullyAnd发送方法.
注意：SendAsync调用,所以你不要等待服务器完全发送电子邮件,然后再将用户带回到点头之外.

public static void ReadFullyAndSend( Stream input )
{
   using ( MemoryStream ms = new MemoryStream() )
   {
      input.CopyTo( ms );

        MailMessage message = new MailMessage("from@foo.com","too@foo.com");
            Attachment attachment = new Attachment(ms,"my attachment","application/vnd.ms-excel");
            message.Attachments.Add(attachment);
            message.Body = "This is an async test.";

            SmtpClient smtp = new SmtpClient("localhost");
            smtp.Credentials = new NetworkCredential("foo","bar");
            smtp.SendAsync(message,null);
   }
}