public static void CheckDateValid(DateTime date) { var minAmount = new DateTime(1970, 1, 1); var maxAmount = DateTime.MaxValue; if (!Validation.CheckDateWithinRange(minAmount, maxAmount, date)) { throw new System.Exception("The date entered was out of range. Value must lie between " + minAmount.ToString("d") + " and " + maxAmount.ToString("d") + "."); } }