出于测试目的,我想知道完成一个过程/功能/订单需要多长时间。
这就是我所做的,但我的方法是错误的,因为如果秒差为 0,则无法返回经过的毫秒数:
请注意 sleep 值是 500 毫秒,所以经过的秒数是 0 那么它不能返回毫秒数。
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))
有人可以告诉我更好的方法吗?也许有 TimeSpan
?
解决方法:
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)
最佳答案
更好的方法是使用 Stopwatch , 而不是 DateTime
差异。
Stopwatch Class - Microsoft Docs
Provides a set of methods and properties that you can use to accurately measure elapsed time.
// create and start a Stopwatch instance
Stopwatch stopwatch = Stopwatch.StartNew();
// replace with your sample code:
System.Threading.Thread.Sleep(500);
stopwatch.Stop();
Console.WriteLine(stopwatch.ElapsedMilliseconds);
关于c# - 测量代码执行时间,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/16376191/