Dart

Remove a Single Related Item from an Email

Demonstrates the Chilkat Email.DropRelatedItem method, which removes the related item at a given zero-based index. A related item is typically an embedded image or style sheet referenced from the HTML body (via a cid: link or Content-Location). This example adds a related style sheet, then removes it by index, printing the count before and after.

Background: Related items live in the message's multipart/related enclosure and are indexed from 0 to NumRelatedItems - 1. Removing one by index is useful when editing a received message — for example stripping a tracking pixel or an unwanted embedded image — while leaving the HTML body and any other related resources in place. To remove them all at once, use DropRelatedItems.

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Dart

import 'package:chilkat/chilkat.dart';

void main() {
  // Demonstrates the DropRelatedItem method, which removes the related item at a given
  // zero-based index.  A related item is typically an embedded image or style sheet
  // referenced from the HTML body.

  final email = CkEmail();

  // Set an HTML body that references a related style sheet by name (Content-Location).
  email.setHtmlBody('<html><head><link rel="stylesheet" href="styles.css"/></head><body>Styled.</body></html>');

  // Add the related item (becomes index 0).
  email.addRelatedString2('styles.css', 'body { color: navy; }', 'utf-8');
  print('NumRelatedItems before = ${email.numRelatedItems}');

  // Remove the related item at index 0.
  email.dropRelatedItem(0);

  print('NumRelatedItems after = ${email.numRelatedItems}');
}