CODEWITHSUNDEEP
c#asp.netvisual-studioemailsmtp
xorpower
xorpower

Reputation: 18963

Get email attachment size in asp.net

Is there any way to know the size of the attachment that is being sent in an email in asp.net c#?

thanks!

Upvotes: 4

Views: 5178

Answers (4)

Jonathas Morais
Jonathas Morais

Reputation: 76

Attachment.ContentDisposition.Size will give the attachment size (in bytes)

string smtpClientHost = "mymailsender.example.com";
string emailAddressFrom = "[email protected]";

MailMessage mailMessage = new MailMessage {
  From = new MailAddress(strEmailAddressFrom)
};

mailMessage.To.Add(new MailAddress("[email protected]"));

mailMessage.Body = "Email body content here...";

mailMessage.Subject = "An important subject...";

foreach(var attachment in attachments)
    if (attachment.ContentDisposition.Size < ByteSize.FromMegaBytes(1).Bytes) 
        mailMessage.Attachments.Add(attachment);

SmtpClient smtpClient = new SmtpClient(strSmtpClientHost);

smtpClient.Send(mailMessage);

Upvotes: 0

dave wanta
dave wanta

Reputation: 7214

Typically attachments are base64 encoded in System.Net.Mail. base64 encoding takes 3 bytes, and converts them to 4 bytes.

What you need to do, is determine the length of the attachment (either as Stream.Length, the byte[] length, or the File length), and divide it by .75.

This will give you the size of the attachment, base64 encoded for SMTP.

Upvotes: 1

David
David

Reputation: 218798

If you're using System.Net.Mail and attaching the file via the Attachment class, then each attachment should have a ContentStream property containing the actual file. This property, of type Stream, has a Length property (of type long) which gives the size of the file in bytes.

Upvotes: 7

Lav
Lav

Reputation: 1896

I believe u can use HttpFileCollection class. It gives you access to all the files uploaded by client. Here is the msdn link

Upvotes: 0

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