using System;

public class Program

{

    public static void Main()

    {

        System.Diagnostics.Stopwatch swConvert = new System.Diagnostics.Stopwatch();

        swConvert.Start();

        for (int i = 0; i < char.MaxValue; i++)

        {

            char c = Convert.ToChar(i);

        }

        swConvert.Stop();

        Console.WriteLine("Convert: {0}", swConvert.Elapsed);

        System.Diagnostics.Stopwatch swCast = new System.Diagnostics.Stopwatch();

        swCast.Start();

        for (int i = 0; i < char.MaxValue; i++)

        {

            char c = unchecked ((char)i);

        }

        swCast.Stop();

        Console.WriteLine("Cast: {0}", swCast.Elapsed);

    }

}