Gujarati language in C#

Question

Hello Friends...
I am creating windows Application "Gujarati To English Dictionary" using C#.
In which i want that user type "tajmhal" from the keyboard and "???????" is displayed in the TEXTBOX at the same time.
ie. If "koml" , "????" is displayed. etc...
i downloaded and set  font for the textbox to "Gujarati Saral-1" and it works.
but when i store that text of textbox to database its again "tajmhal" not "???????" and all.
so,please suggest me another solution for that.
Thank you.