How to show string in Textbox that have TextMode="Password"

hi all
I have problem with password. when I save password in to table
I Encrypted it. but on textbox I set textmode="Password".
and problem have when i read it from table. it can not show in textbox.
I sure when i read it I Decrypted it to original text.
and i think cause textbox have textmode="Password".
if so how can i show password in textbox and show like this "*"
not show text?
thank advance.