i want code for below specified condition

Question

sir in my project i have 3 dropdownlistcondition is: 1) 3 dropdownlists are month,day and year.
                    2) if i select month in  first dropdownlist in next dropdownlist  current date and year must be displayed.
                    3) code must be asp.net c# web application only

for example you can check below link.
http://www.toyotabharat.com/inen/forms/testdrive.aspx
just select any state in that page check
Preferred Date:

Date (mm/dd/yyyy)

--Month-- July August September

--Day--

--Year--