Objective-C

Add an Attachment from a BinData Object

Demonstrates the Chilkat Email.AddAttachmentBd method, which adds an attachment using the contents of a BinData object. The first argument is the attachment filename, the second is the BinData, and the third is the content type — if empty, it is inferred from the filename extension. This example loads a PDF into a BinData and attaches it.

Background: BinData is Chilkat's container for raw binary data. Attaching from a BinData is the right approach when the file's bytes are already in memory — generated on the fly, downloaded, or read from a database — rather than sitting on disk (which would use AddFileAttachment). Chilkat Base64-encodes the bytes into the message automatically.

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Objective-C

#import <CkoEmail.h>
#import <CkoBinData.h>

BOOL success = NO;

//  Demonstrates the AddAttachmentBd method, which adds an attachment using the contents of a
//  BinData object.  The first argument is the attachment filename, the second is the BinData
//  object, and the third is the content type (inferred from the filename extension if empty).

CkoEmail *email = [[CkoEmail alloc] init];
email.Subject = @"Attach from BinData";
email.Body = @"Please see the attached file.";

//  Load a file into a BinData object, then attach it.
CkoBinData *bd = [[CkoBinData alloc] init];
success = [bd LoadFile: @"qa_data/attachments/report.pdf"];
if (success == NO) {
    NSLog(@"%@",bd.LastErrorText);
    return true;
}

success = [email AddAttachmentBd: @"report.pdf" binData: bd contentType: @"application/pdf"];
if (success == NO) {
    NSLog(@"%@",email.LastErrorText);
    return true;
}

NSLog(@"%@%d",@"NumAttachments = ",[email.NumAttachments intValue]);

//  Note: The path "qa_data/attachments/report.pdf" is a relative local filesystem path,
//  relative to the current working directory of the running application.