Remove a Single Related Item from an Email

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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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//  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.

Chilkat.Email email = new Chilkat.Email();

//  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");
Debug.WriteLine("NumRelatedItems before = " + Convert.ToString(email.NumRelatedItems));

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

Debug.WriteLine("NumRelatedItems after = " + Convert.ToString(email.NumRelatedItems));