String.Replace not working on long html code. (Mail.Body)

StackOverflow https://stackoverflow.com/questions/14880131

Question

So, I just came across a minor problem, given a mail object:

Mail = new MailMessage();

Generating it's body:

Mail.IsBodyHtml = true; 
Mail.Body = GenerateHTMLFoo(); // it's a stringbuilder

Now Mail.Body contains a whole HTML document, just showing the first line for example:

"<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\" \"http://www.w3.org/TR/html4/loose.dtd\">

Then I send the mail, and after that I would like to replace something in it's body:

Mail.Body.Replace("cid:header", "header.jpg"); // no effect

Any ideas? Mail.Body is a string, and the replacing has no effect on it.

Était-ce utile?

La solution

I fixed it with this, but I'm still curious why it didn't worked the "normal" way.

            MailBody = new StringBuilder(Mail.Body);
            MailBody.Replace("cid:header", "header.jpg");
            Mail.Body = MailBody.ToString();
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