C # Empty file when connecting to MailMessage object
I am trying to send an email when my application crashes with an attachment describing the problem (the error details are collected from the database). I tried to create a file without tying it to email and it works fine (with data collected from the database). Here's an example very close to what I have:
MailMessage mailMessage = new MailMessage();
mailMessage.To.Add("Address1@test.com");
mailMessage.From = new MailAddress("Address2@test.com");
mailMessage.Subject = "Subject";
mailMessage.Body = "Body";
FileStream fs = new FileStream("Test.txt", FileMode.Create, FileAccess.ReadWrite);
StreamWriter sw = new StreamWriter(fs);
sw.WriteLine("Text");
Attachment attach = new Attachment(fs, "Test.txt", "Text/Plain");
mailMessage.Attachments.Add(attach);
SmtpClient smtp = new SmtpClient();
try
{
smtp.Send(mailMessage);
}
catch(Exception ex)
{
MessageBox.Show(ex.Message + Environment.NewLine + ex.InnerException);
}
sw.Close();
I've also tried:
MailMessage mailMessage = new MailMessage();
mailMessage.To.Add("Address1@test.com");
mailMessage.From = new MailAddress("Address2@test.com");
mailMessage.Subject = "Subject";
mailMessage.Body = "Body";
using (FileStream fs = new FileStream("Test.txt", FileMode.Create, FileAccess.ReadWrite))
{
StreamWriter sw = new StreamWriter(fs);
sw.WriteLine("Text");
Attachment attach = new Attachment(fs, "Test.txt", "Text/Plain");
mailMessage.Attachments.Add(attach);
SmtpClient smtp = new SmtpClient();
try
{
smtp.Send(mailMessage);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message + Environment.NewLine + ex.InnerException);
}
}
The file is attached to the letter, has a size, but is empty. What am I doing wrong?
Thanks in advance.
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2 answers
Answering my own question ... Found the answer here .
Here is the code I used:
MailMessage mailMessage = new MailMessage();
mailMessage.To.Add("Address1@test.com");
mailMessage.From = new MailAddress("Address2@test.com");
mailMessage.Subject = "Subject";
mailMessage.Body = "Body";
using (MemoryStream memoryStream = new MemoryStream())
{
byte[] contentAsBytes = Encoding.UTF8.GetBytes("Test");
memoryStream.Write(contentAsBytes, 0, contentAsBytes.Length);
memoryStream.Seek(0, SeekOrigin.Begin);
ContentType contentType = new ContentType();
contentType.MediaType = MediaTypeNames.Text.Plain;
contentType.Name = "Test.txt";
Attachment attach = new Attachment(memoryStream, contentType);
mailMessage.Attachments.Add(attach);
SmtpClient smtp = new SmtpClient();
try
{
smtp.Send(mailMessage);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message + Environment.NewLine + ex.InnerException);
}
}
I used MemoryStream instead of FileStream . I also created a content type object instead of just specifying the MediaType in the attachment constructor.
Thanks for helping everyone.
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using (FileStream fs = new FileStream("Test.txt", FileMode.Create, FileAccess.ReadWrite))
{
StreamWriter sw = new StreamWriter(fs);
sw.WriteLine("Text");
sw.Close();
}
MailMessage mailMessage = new MailMessage();
mailMessage.To.Add("Address1@test.com");
mailMessage.From = new MailAddress("Address2@test.com");
mailMessage.Subject = "Subject";
mailMessage.Body = "Body";
Attachment attach = new Attachment("Test.txt", "Text/Plain"); //add a complete file path if needed
mailMessage.Attachments.Add(attach);
SmtpClient smtp = new SmtpClient();
try
{
smtp.Send(mailMessage);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message + Environment.NewLine + ex.InnerException);
}
}
0
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