如何判断这两日期相等？？？？

Question

如何判断这两日期相等？？？？（不是在sql里）
2009-4-20和2009-04-20

Answer 1

 private int DateCompare(string date1, string date2)
        {
            try
            {
                string[] _date1 = date1.Split(new char[] { '-' });
                string[] _date2 = date2.Split(new char[] { '-' });                DateTime dt1 = new DateTime(Int32.Parse(_date1[0]), Int32.Parse(_date1[1]), Int32.Parse(_date1[2]));
                DateTime dt2 = new DateTime(Int32.Parse(_date2[0]), Int32.Parse(_date2[1]), Int32.Parse(_date2[2]));
                return dt1.CompareTo(dt2);
            }
            catch
            {
                return -2;
            }
        }

Answer 2

 return Convert.ToDateTime("2009-4-20") == Convert.ToDateTime("2009-04-20");