Get the Filename of an Attachment

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Demonstrates the Chilkat Email.GetAttachmentFilename method, which retrieves an attachment's filename as stored in the MIME. The index is zero-based. This example adds an attachment and reads its filename.

Background: An attachment's filename comes from the sender's message and is not guaranteed to be safe or unique — it may include path separators or characters that are awkward on the local filesystem, and two attachments can share a name. When saving attachments to disk, treat this value as untrusted input: sanitize it and guard against collisions (see the OverwriteExisting property, which can auto-generate unique names).

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//  Demonstrates the GetAttachmentFilename method, which retrieves an attachment's filename
//  (as stored in the MIME).  The index is zero-based.

Chilkat.Email email = new Chilkat.Email();
email.Subject = "Attachment filename";

email.AddStringAttachment("notes.txt","Some notes.");

//  Get the filename of the first attachment (index 0).
string fname = email.GetAttachmentFilename(0);
Debug.WriteLine("Attachment 0 filename: " + fname);