【Microsoft Visual Studio】VB.net 【範例source】Stopwatch

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＊　　　　　　　　　　電腦環境：Windows 7 64bit　　　　　　　　　　　　　　　　＊

＊　　　　　　　　　　Microsoft Visual Studio版本：2010 Professional　　　　　　　　 ＊

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用Stopwatch計算累計耗費時間
方法：
一、依序呼叫Start→Stop→ElapsedMilliseconds或ElapsedTicks。
二、要計算多段程式累計耗費的時間，也只要Start→Stop→…→Start→Stop→ElapsedMilliseconds或ElapsedTicks即可。
三、用Reset→Start→Stop→加總→…這樣的方法來做。但這樣的做法會比較耗時，求得的值也會有誤差。

        Dim sw As New Stopwatch
        sw.Reset()
        sw.Start()
        sw.Stop()
        ShowMessage("一共耗費：" + Module1.Time(sw.Elapsed) + "秒")
        Console.WriteLine(sw.ElapsedMilliseconds)

＞＞＞＞＞＞以下這個例子雖不是用VB寫但更好知道怎麼應用＜＜＜＜＜＜
        {
            int count = 10;
            long total = 0;
            Stopwatch sw = new Stopwatch();

            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);
        }