Set the Charset of an Attachment

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Demonstrates the Chilkat Email.SetAttachmentCharset method, which sets the charset parameter of the Content-Type header field for the attachment at a given zero-based index. This example adds a text attachment and sets its charset to utf-8.

Background: For a text attachment, the charset parameter tells the receiving client which character encoding the bytes use, so accented or non-Latin text renders correctly. Setting it explicitly (typically utf-8) removes ambiguity when the attachment contains non-ASCII content — without it, a client may guess wrong and display garbled characters.

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bool success = false;

//  Demonstrates the SetAttachmentCharset method, which sets the charset parameter of the
//  Content-Type header field for the attachment at the given zero-based index.

Chilkat.Email email = new Chilkat.Email();
email.Subject = "Set attachment charset";

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

//  Set the charset of the first attachment (index 0) to utf-8.
success = email.SetAttachmentCharset(0,"utf-8");
if (success == false) {
    Debug.WriteLine(email.LastErrorText);
    return;
}

//  The attachment's Content-Type now includes charset="utf-8".
Debug.WriteLine(email.GetMime());