我想知道一個(gè)過程/功能/命令需要花費(fèi)多少時(shí)間來(lái)進(jìn)行測(cè)試。這是我所做的，但是我的方法是錯(cuò)誤的，因?yàn)槿绻氲牟顬?，則無(wú)法返回經(jīng)過的毫秒數(shù)：請(qǐng)注意，睡眠值是500毫秒，所以經(jīng)過的秒數(shù)是0，那么它就不能返回毫秒。    Dim Execution_Start As System.DateTime = System.DateTime.Now    Threading.Thread.Sleep(500)    Dim Execution_End As System.DateTime = System.DateTime.Now    MsgBox(String.Format("H:{0} M:{1} S:{2} MS:{3}", _    DateDiff(DateInterval.Hour, Execution_Start, Execution_End), _    DateDiff(DateInterval.Minute, Execution_Start, Execution_End), _    DateDiff(DateInterval.Second, Execution_Start, Execution_End), _    DateDiff(DateInterval.Second, Execution_Start, Execution_End) * 60))有人可以告訴我一種更好的方法嗎？也許與TimeSpan？解決方案：Dim Execution_Start As New StopwatchExecution_Start.Start()Threading.Thread.Sleep(500)MessageBox.Show("H:" & Execution_Start.Elapsed.Hours & vbNewLine & _       "M:" & Execution_Start.Elapsed.Minutes & vbNewLine & _       "S:" & Execution_Start.Elapsed.Seconds & vbNewLine & _       "MS:" & Execution_Start.Elapsed.Milliseconds & vbNewLine, _       "Code execution time", MessageBoxButtons.OK, MessageBoxIcon.Information)