I have a method in which I send File as attachment. I use StreamWriter
and MemoryStream
to create attachment. Code below:
public void ComposeEmail(string from, string to, SmtpClient client)
{
MailMessage mm = new MailMessage(from, to, "Otrzymałeś nowe zamówienie od "+from , "Przesyłam nowe zamówienie na sprzęt");
mm.BodyEncoding = UTF8Encoding.UTF8;
mm.DeliveryNotificationOptions = DeliveryNotificationOptions.OnFailure;
// Adding attachment:
using (var ms = new System.IO.MemoryStream())
{
using (var writer = new System.IO.StreamWriter(ms))
{
writer.Write("Hello its my sample file");
writer.Flush();
System.Net.Mime.ContentType ct = new System.Net.Mime.ContentType(System.Net.Mime.MediaTypeNames.Text.Plain);
System.Net.Mail.Attachment attach = new System.Net.Mail.Attachment(ms, ct);
attach.ContentDisposition.FileName = "myFile.txt";
mm.Attachments.Add(attach);
try
{
client.Send(mm);
}
catch (SmtpException e)
{
Console.WriteLine(e.ToString());
}
}
}
}
as You can see in these lines I write to "file":
writer.Write("Hello its my sample file");
writer.Flush();
While debugging I can see that MemoryStream
has length of 24 ( just like length of string written to it). But file received in mailbox is empty.
What am I doing wrong?
Try rewinding the stream:
writer.Flush();
ms.Position = 0; // <===== here
System.Net.Mime.ContentType ct = new System.Net.Mime.ContentType(
System.Net.Mime.MediaTypeNames.Text.Plain);
System.Net.Mail.Attachment attach = new System.Net.Mail.Attachment(ms, ct);
Otherwise, the stream is still going to be positioned at the end, and reading from there will immediately report EOF.
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