c# - Why does the Replace() string method not modify my string variable?

Question

emailBody.Replace("[CONFIRMATION_LINK]", confirmLink);

// now that the emailBody variable is set, send the email
emailer.sendEmail(emailAddress, Master.noReplyEmail, emailSubj, emailBody);

emailBody is a non-null string variable that contains the body of the email I'm going to send out, including the phrase "[CONFIRMATION_LINK]". I want to replace that phrase with the content of confirmLink variable (some URL).

When I send my email, I still see the phrase "[CONFIRMATION_LINK]" in the email body. Why?

Answer 1

Strings are immutable. String operation generally return new string instances. Try this:

emailBody = emailBody.Replace("[CONFIRMATION_LINK]", confirmLink);