Question

我需要从网上下载文本文件并在发送之前将其附加到邮件中。以下是我所做的但它抛出异常`发送邮件失败。该请求被曝光'

WebRequest request = FtpWebRequest.Create("http://samplesite/sampletext.txt"));
request.Credentials = new NetworkCredential("admin", "admin");
using (WebResponse response = request.GetResponse())
{
    Stream responseStream = response.GetResponseStream();
    msg.Attachments.Add(new Attachment(responseStream, dictIterator.Key)); //on commenting this, it  works fine
}
client.Send(msg);  //throws exception

我确定它与附件有关，因为它可以使其正常工作。

Answer 1

您正在处理响应对象，然后再从其流中读取和使用它。我没有测试代码，但这是一个简单的想法如何使用它：

byte[] myResponse;
using (WebResponse response = request.GetResponse())
{
    Stream responseStream = response.GetResponseStream();
    myResponse = ReadFully(responseStream);//done with the stream now and dispose it
    msg.Attachments.Add(new Attachment(Encoding.ASCII.GetString(myResponse), dictIterator.Key));
}
client.Send(msg);

Answer 2

试试这段代码：

SmtpClient client=new SmtpClient( );
        client.Credentials = new NetworkCredential("username", "password");

        MailMessage msg = new MailMessage();
        client.Host = "yourHost";
        msg.From =new MailAddress( "adress-from");
        msg.To.Add( new MailAddress("adress-to"  ));
        msg.Subject = "your subject";
        msg.Body="your message";

        System.Net.WebRequest myrequest;
        System.Net.WebResponse myresponse;
        System.IO.Stream s;

        string url = "your url to the file";
        myrequest = System.Net.WebRequest.Create(url);
        myresponse = myrequest.GetResponse();

        s = myresponse.GetResponseStream();

        msg.Attachments.Add(new Attachment( s,System.Net.Mime.MediaTypeNames.Text.Plain));


        client.Send(msg);

无法从网络发送带附件的邮件

2 个答案: