I am using Microsoft Visual Studio 2005. I would like to know how to separate content in a richtextbox(rtbTo) in windows form with a comma automatically. For example after copying email addresses from a .txt file and pasting it to the richtextbox(rtbTo), there should be a comma inserted automatically, seperating each email address. I tried to find such settings in the properties of the richtextbox but is unsuccessful.
Any help or advice will be appreciated.