C#计时器

int[] iArrary = new int[30000];   
  
            Random rd = new Random();   
  
            for (int i = 0; i < 30000; i++)   
  
            {   
  
                iArrary[i] = rd.Next(0, 9999);   
  
            }   
  
  
  
            long begin = DateTime.Now.Ticks;   
  
            Program q = new Program();   
  
            q.Sort(iArrary);   
  
            long end = DateTime.Now.Ticks;   
  
  
  
            for (int m = 0; m < 30000; m++)   
  
            Console.WriteLine("{0}", iArrary[m]);   
  
            Console.Write(end - begin);   
  
            Console.ReadLine();