Stopwatch.Elapsed total elapsed time

Question

Stopwatch.Elapsed total elapsed time

S-Soft 666

Hello

How to check if Stopwatch.Elapsed total elapsed time is below 1 minute?

Dim ELTS As TimeSpan = Stopwatch.Elapsed

If ELTS.Minutes < 1 Then...

Does not seem to work correctly, it is true if total time is exactly 1 hour since minutes is less than 1.

Confused :(

Anonymous

2023-10-29T14:23:18.2866667+00:00

Hi

A StopWatch is an incremental thing and from your question, you seem to be wanting to count down - is that the case? In any case, to avoid the kind of issue you are talking of, you could use .ElapsedMilliseconds which would reflect the time as one number.
S-Soft 666 Reputation points

2023-10-29T15:04:33.1833333+00:00

Hello @Les

Thanks, actually I need to get the time spent on some process, but at the end, I need to go 2 separate paths if total time is less or more than 1minute, so use .ElapsedMilliseconds or .TotalMinutes ?

If ELTS.ElapsedMilliseconds < 60000 Then...

vs

If ELTS.TotalMinutes < 1 Then...
Anonymous

2023-10-29T15:12:13.7966667+00:00

Hi

If you use Elapsed Milliseconds, then any calculated time interval - such as 1 minute is simply 60sec * 1000 milliseconds and there is no wrap around to hours days etc. that are present if you use a TimeSpan.

I am still curious. When you try to compare the elapsed time being LESS than 1 minute, that suggests a reducing counter - how do you do that - is it a Timer using a (minus) elapsed time?
S-Soft 666 Reputation points

2023-10-29T15:42:14.47+00:00

Thanks for the valuable tips, first need to show the total time of the process, but need to show only seconds and milliseconds if total time is less than 1 minute, otherwise show hours, minutes and seconds only! Any idea?
KOZ6.0 6,735 Reputation points

2023-10-29T16:27:32.1633333+00:00

@S-Soft

You should have written that in the question.What should you do if it exceeds 24 hours?
S-Soft 666 Reputation points

2023-10-29T16:57:16.1433333+00:00

Thanks man, for the precious help, how to accept as answer? :)
Anonymous

2023-10-29T23:25:32.6766667+00:00

Hi

If you mean mark as answer for my post, then you can't, best to mark @KOZ6.0 post as answer.
WayneAKing 4,931 Reputation points

2023-10-30T00:26:05.5066667+00:00

>If you mean mark as answer for my post, then you can't

You could repost your code as an Answer instead of a comment, then the OP can mark that.

Accepted answer

2 additional answers

Your answer

Anonymous

2023-10-29T14:23:18.2866667+00:00

Hi

A StopWatch is an incremental thing and from your question, you seem to be wanting to count down - is that the case? In any case, to avoid the kind of issue you are talking of, you could use .ElapsedMilliseconds which would reflect the time as one number.
S-Soft 666 Reputation points

2023-10-29T15:04:33.1833333+00:00

Hello @Les

Thanks, actually I need to get the time spent on some process, but at the end, I need to go 2 separate paths if total time is less or more than 1minute, so use .ElapsedMilliseconds or .TotalMinutes ?

If ELTS.ElapsedMilliseconds < 60000 Then...

vs

If ELTS.TotalMinutes < 1 Then...
Anonymous

2023-10-29T15:12:13.7966667+00:00

Hi

If you use Elapsed Milliseconds, then any calculated time interval - such as 1 minute is simply 60sec * 1000 milliseconds and there is no wrap around to hours days etc. that are present if you use a TimeSpan.

I am still curious. When you try to compare the elapsed time being LESS than 1 minute, that suggests a reducing counter - how do you do that - is it a Timer using a (minus) elapsed time?
S-Soft 666 Reputation points

2023-10-29T15:42:14.47+00:00

Thanks for the valuable tips, first need to show the total time of the process, but need to show only seconds and milliseconds if total time is less than 1 minute, otherwise show hours, minutes and seconds only! Any idea?
KOZ6.0 6,735 Reputation points

2023-10-29T16:27:32.1633333+00:00

@S-Soft

You should have written that in the question.What should you do if it exceeds 24 hours?
S-Soft 666 Reputation points

2023-10-29T16:57:16.1433333+00:00

Thanks man, for the precious help, how to accept as answer? :)
Anonymous

2023-10-29T23:25:32.6766667+00:00

Hi

If you mean mark as answer for my post, then you can't, best to mark @KOZ6.0 post as answer.
WayneAKing 4,931 Reputation points

2023-10-30T00:26:05.5066667+00:00

>If you mean mark as answer for my post, then you can't

You could repost your code as an Answer instead of a comment, then the OP can mark that.

Answer 1

Hi

Here is a simplified stand alone example, not completely checked, but should work OK. See if this helps.

' Form1 with Label1
Option Strict On
Option Explicit On
Public Class Form1
  Dim sw As New Stopwatch
  Dim switch As Boolean = True
  Private Sub Form1_Shown(sender As Object, e As EventArgs) Handles Me.Shown
    Label1.Text = "Start"
  End Sub
  Sub DoTimer()
    sw.Start()

    ' simulate running process loop
    Do

      Label1.Text = GetTime(sw.ElapsedMilliseconds)
      Application.DoEvents()

      ' dummy load
      Threading.Thread.Sleep(1000)

    Loop Until switch

  End Sub
  Function GetTime(ms As Long) As String
    Dim secs As Long = 1000
    Dim mins As Long = 60 * secs
    Dim hrs As Long = 60 * mins

    Dim h As Long = (ms \ hrs)
    Dim m As Long = (ms - (h * hrs)) \ mins
    Dim s As Long = (ms - (h * hrs) - (m * mins)) \ secs

    Dim rs As String = s.ToString("00s")

    If m > 0 Then rs = m.ToString("00m ") & s.ToString("00s")

    If h > 0 Then rs = h.ToString("00h ") & m.ToString("00m ") & s.ToString("00s")

    Return rs
  End Function
  Private Sub Label1_Click(sender As Object, e As EventArgs) Handles Label1.Click
    ' NOTE: sw is kept running
    If switch Then
      switch = False
      DoTimer()
    Else
      switch = True
    End If
  End Sub
End Class

Dewayne Basnett 1,381 Reputation points

2023-10-30T13:52:41.21+00:00

WOW. Not sure how exactly this checks for a stopwatch elapsed time under a minute. If it is in GetTime it is overkill to be certain.

Answer 2

KOZ6.0 6,735

Let's take a look at the implementation of TimeSpan. TimeSpan holds Ticks.

https://referencesource.microsoft.com/#mscorlib/system/timespan.cs

if (ELTS.Ticks < TimeSpan.TicksPerMinute)

You can also write it like this.

S-Soft 666 Reputation points

2023-10-29T14:11:36.1633333+00:00

Hello and thanks for your help, man I've no idea how did I miss .TotalMinutes?!

Let me test it to confirm :)

Answer 3

Dewayne Basnett 1,381

How about the obvious,

        Dim oneMinute As TimeSpan = TimeSpan.FromMinutes(1)
        Dim totTimeString As String
        If myStopwatch.Elapsed < oneMinute Then
            totTimeString = String.Format("Proc time: {0} (secs.ms)", myStopwatch.Elapsed.ToString("ss\.fff"))
        Else
            totTimeString = String.Format("Proc time: {0} (hrs:min:sec)", myStopwatch.Elapsed.ToString("hh\:mm\:ss"))
        End If

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Stopwatch.Elapsed total elapsed time

2 additional answers

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