AjScript.Predicates.IsNumber C# (CSharp) Метод

        public static bool IsNumber(object obj)
        {
            if (obj == null)
                return false;

            if (obj is int)
                return true;

            if (obj is string)
                return false;

            if (obj is long)
                return true;

            if (obj is short)
                return true;

            if (obj is double)
                return true;

            if (obj is float)
                return true;

            return false;
        }