Datetime format in textbox

Hi I'm retrieving a datetime type of data from sql table database
My problem is when I'm retriving it to my textbox it appear something like this -->> 1/10/1990 12:00
what i want is to remove the time and appear like this only ---> 1/10/1999
 
How can I do this?
btw I'm using c# 
Thanks in advance!
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