Question Another Stopwatch Class (framework 3.5) question

[sisquo76]

Is it possible to trigger event whenever seconds on stopwatch change (that means every second, but it has to be synchronized with seconds)?

Thanks,

sisquo76

 

[JohnH]

No, StopWatch doesn't have events, use one of the Timers for this.

 

[sisquo76]

No, StopWatch doesn't have events, use one of the Timers for this.

John, please tell me is it too low to set Timer's interval to 100ms, because I need as precise as possible moment when seconds value changes?

sisquo76

 

[MattP]

If you take a look at the interval property on the timer you'll see 'The frequency of Elapsed events in milliseconds'. If should have a default value of 100 already.

 

[JohnH]

If you find the Forms.Timer lacking in precision use the Timers.Timer instead.

 

[sisquo76]

If you find the Forms.Timer lacking in precision use the Timers.Timer instead.

Ok, this is the problem. I have this code

Public Function GameTime() As String
        Try
            Dim iMinutes As Integer = Int(Stopwatch.Elapsed.TotalMinutes)
            iMinutes += iAdditionalTime
            Dim sMinutes As String = iMinutes.ToString("##0")
            Dim sSeconds As String = Stopwatch.Elapsed.Seconds.ToString("00")
            Return sMinutes + ":" + sSeconds
        Catch
            Return "0:00"
        End Try
    End Function

    Private Sub Timer1_Tick(ByVal sender As Object, ByVal e As System.EventArgs) Handles Timer1.Tick
   Dim SW As New StreamWriter(ReadFilesPath() + "\Stopwatch.txt", False, System.Text.Encoding.Default)
            SW.Write(GameTime)
            SW.Close()
    End Sub

Timer1 interval is set to 100ms. I'm saving this file to network share every 100ms, so I think this is too often. What I would like to do is to find the way to trigger event every time second changes in Stopwatch Class. Do you know any way to do this?

sisquo76

 

[JohnH]

saving this file to network share every 100ms, so I think this is too often.

Absoluty, keep the file open.

What I would like to do is to find the way to trigger event every time second changes in Stopwatch Class / Is it possible to trigger event whenever seconds on stopwatch change

No, StopWatch doesn't have events, use one of the Timers for this.

To write elapsed time each second just store start time (Date.Now) in a variable and trigger Timer 1000ms where you write the timespan (Date.Now-startTime). This is also how the StopWatch class works.