gistfile1.cs

    public static class StringExtensions
    {
        public static bool TryParseInt16(this string source, Func<short, bool> condition)
        {
            short result = 0;
            if (short.TryParse(source, out result))
                return condition(result);
            else
                return false;
        }

        public static bool TryParseInt32(this string source, Func<int, bool> condition)
        {
            int result = 0;
            if (int.TryParse(source, out result))
                return condition(result);
            else
                return false;
        }

        public static bool TryParseDouble(this string source, Func<double, bool> condition)
        {
            double result = 0;
            if (double.TryParse(source, out result))
                return condition(result);
            else
                return false;
        }