Print Datagridview with checkbox vb.net

I follow the steps in this link to print datagridview :

How to print Datagridview has a table in VB

However, once it entered the print preview, one of the columns which is of check box type display true/false instead of (checked/unchecked). My datagridview is able to display the data as (checked/unchecked) though. Can I know which line I should change to display it as a checkbox column?

(P.S : Sorry, my low reputation does not allow me to comment on the thread, otherwise I would do so but not open a new one.)