最佳答案
为了测试的目的,我想知道一个过程/函数/订单需要多少时间才能完成。
这就是我所做的,但是我的方法是错误的,因为如果秒差为0,就不能返回经过的毫秒:
注意,休眠值是500ms,所以经过的秒数是0,那么它不能返回毫秒。
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))
有人能教我一个更好的方法吗? 也许用 TimeSpan
?
解决办法:
Dim Execution_Start As New Stopwatch
Execution_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)