[C#]用Stopwatch計算累計耗費時間的注意事項

        for (int i = 1; i <= count; i++)
        {
            sw.Reset();
            sw.Start();
            string guid = Guid.NewGuid().ToString();
            sw.Stop();
            total += sw.ElapsedMilliseconds;
        }
        Console.WriteLine(total);

        sw.Reset();
        for (int i = 1; i <= count; i++)
        {
            sw.Start();
            string guid = Guid.NewGuid().ToString();
            sw.Stop();
        }
        Console.WriteLine(sw.ElapsedMilliseconds);

    }</pre></div>

        for (int i = 1; i <= count; i++)
        {
            sw.Reset();
            sw.Start();
            System.Threading.Thread.Sleep(10);
            sw.Stop();
            total += sw.ElapsedMilliseconds;
        }
        Console.WriteLine(total);

        sw.Reset();
        for (int i = 1; i <= count; i++)
        {
            sw.Start();
            System.Threading.Thread.Sleep(10);
            sw.Stop();
        }
        Console.WriteLine(sw.ElapsedMilliseconds);

    }</pre></div>

        for (int i = 1; i <= count; i++)
        {
            sw.Reset();
            sw.Start();
            System.Threading.Thread.Sleep(1000);
            sw.Stop();
            total += sw.ElapsedMilliseconds;
        }
        Console.WriteLine(total);

        sw.Reset();
        for (int i = 1; i <= count; i++)
        {
            sw.Start();
            System.Threading.Thread.Sleep(1000);
            sw.Stop();
        }
        Console.WriteLine(sw.ElapsedMilliseconds);
    }</pre></div>

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