method-speed-compare.cs

void Main()
{
 
    //function to measure an actions execution time
    Func<Action,int,TimeSpan> ma = (m,c) =>{
        Stopwatch s = new Stopwatch();
        s.Start();
        for (int i = 0; i < c; i++)
            m();
        s.Stop();
        return s.Elapsed;
    };
    
    Random rnd = new Random(); //randomizer for our random numbers
    int aw = 0;    //counter for how many times A Method was faster
    int rnc = 10000; //random number counter - how many random numbers to try
    int tc = 1000;  //test counter - how many tests to run against each random number
    byte[] buffer = null; //init buffer for our Actions to use
    
    //the two Actions to test
    Action a = () => { var v = ((ushort)(buffer[0] << 8 | buffer[1])).ToString();};
    Action b = () => { var v = ((ushort)IPAddress.NetworkToHostOrder(BitConverter.ToInt16(buffer, 0))).ToString();};
    
    //get this many random numbers
    for (int r = 0; r < rnc; r++)
    {
        //populate the 'buffer' with some value up to 64k
        buffer = BitConverter.GetBytes((UInt16)rnd.Next(0,65535));
        //if the 'a' method is faster, increment it's win counter,
        //     test each random number 'tc' number of times
        if(ma(a,tc) < ma(b,tc))
            aw++;
    }
    
    //show the results
    Console.WriteLine("Wins - A:{0} B:{1} - AWin% = {2}%", aw, rnc-aw, ((float)aw/rnc)*100);
        
}