The test to to compare named and positional arguments

using System;
using System.Diagnostics;

class Base {
    public virtual void f(int size, string name, bool flag)
    {
        Program.Method3(flag: true, size: 1, name: "Perl");
    }
}
class Derived : Base {
    public override void f(int size, string name, bool flag)
    {
        Program.Method3(flag: true, size: 1, name: "Perl");
    }
}

class Program
{

    const int _max = 100000000;
    static void Main()
    {
        var b = new Derived();
        Method1(b);
        Method2(b);

        var s0 = Stopwatch.StartNew();
        for (int i = 0; i < _max; i++)
        {
            Method1(b);
        }
        for (int i = 0; i < _max; i++)
        {
            Method2(b);
        }
        s0.Stop();
        // begin real test
        var s1 = Stopwatch.StartNew();
        for (int i = 0; i < _max; i++)
        {
            Method1(b);
        }
        s1.Stop();
        var s2 = Stopwatch.StartNew();
        for (int i = 0; i < _max; i++)
        {
            Method2(b);
        }
        s2.Stop();
        // begin real test reversed order
        var s4 = Stopwatch.StartNew();
        for (int i = 0; i < _max; i++)
        {
            Method2(b);
        }
        s4.Stop();
        var s3 = Stopwatch.StartNew();
        for (int i = 0; i < _max; i++)
        {
            Method1(b);
        }
        s3.Stop();
        Console.WriteLine("1 named: {0}", ((double)(s1.Elapsed.TotalMilliseconds * 1000 * 1000) /
            _max).ToString("0.00 ns"));
        Console.WriteLine("1 raw  : {0}", ((double)(s2.Elapsed.TotalMilliseconds * 1000 * 1000) /
            _max).ToString("0.00 ns"));
        Console.WriteLine("2 named: {0}", ((double)(s3.Elapsed.TotalMilliseconds * 1000 * 1000) /
            _max).ToString("0.00 ns"));
        Console.WriteLine("2 raw  : {0}", ((double)(s4.Elapsed.TotalMilliseconds * 1000 * 1000) /
            _max).ToString("0.00 ns"));
        Console.Read();
    }

    static void Method1(Base b)
    {
        // Method3(flag: true, size: 1, name: "Perl");
        b.f(flag: true, size: 1, name: "Perl");
    }

    static void Method2(Base b)
    {
        // Method3(1, "Perl", true);
        b.f(1, "Perl", true);
    }

    public static void Method3(int size, string name, bool flag)
    {
        if (!flag && size != -1 && name != null)
        {
            throw new Exception();
        }
    }
}