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hi friends
i have to text box fist is birth date and second is join date and my problem is how to validate difference between 20 year birth date and join date pls help me

DateTime a, b;
a = Convert.ToDateTime(TextBox1.Text);
b = Convert.ToDateTime(TextBox2.Text);
System.TimeSpan span = b - a;
int days = (int)span.TotalDays + 1;

Now you have total days between these two dates.Perform actions accordingly.
[no name] 21-May-13 2:34am
but my problem is how to validate in validation control
Aarti Meswania 21-May-13 2:50am
in asp you can do like this...
int year = DateDiff(DateInterval.Year, New Date(1978, 7, 9), Now);

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