using System;

​

public class Program

{

    public void Main()

    {

        Console.WriteLine(TestDate(29, 2, 2016));

    }

    private bool TestDate(int day, int month, int year)

    {

        try

        {

            https://dotnetfiddle.net/DateTime date = new DateTime(year, month, day);

            return true;

        }

        catch

        {

            return false;

        }

    }

}