How To get Age

Notice that Kumar's approach may not be completely accurate because of intervening leap years which, of course, have 366 rather than 365 days.

To deal with this problem, I usually calculate age using a notional 372 day year which contains 12 months of 31 days each:

Dear
UmashankarSahu

I Hope this code will be useful to you.

//Public DateTime Current_Date=DateTime.Now; (write this line after Initializecomponent(); } )
DateTime dob=dateTimePicker1.value;
DateTime PresentYear=Current_Date;
TimeSpan ts=PresentYear - dob;
int age = ts.Days / 365;
// and assign the ts value into textbox u want;

textbox.text=age.ToString();

Regards,
Kumarvarmareddy