This shows that the evaluation order of parameters is dictated by their order all that call site, not the order in the function definition.

EvalOrder

    class Program
    {
        static void Main(string[] args)
        {
            int i = 5;
            EvalOrder(++i, i++); // 6, 6
            Console.WriteLine(i);  // 7
            EvalOrder(second: ++i, first: ++i); // 9, 8
            Console.WriteLine(i); // 9

        }

        static void EvalOrder(int first, int second)
        {
            Console.WriteLine("First: {0}, Second: {1}", first, second);
        }
    }