Methods for refreshing form data

It is easy to confuse which method is the correct one to use for refreshing data in forms since Dynamics AX has 4 different form refresh methods:- refresh(), reread(), research() and executeQuery().

Vanya Kashperuk has posted an excellent article on explaining the usages of these methods.
http://kashperuk.blogspot.com/2010/03/tutorial-reread-refresh-research.html