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POStopWatch Loop using VB.NET
 

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    <p>I want to create a simple timer with this interface using VB.NET</p> <p><img src="https://i.stack.imgur.com/p08Sv.png" alt="enter image description here"></p> <p>I want to press Button1 and to start counting seconds in the textbox.</p> <p><a href="https://stackoverflow.com/questions/10470276/my-timer-in-vb-net-is-losing-one-second">I do not want to use the Timer Component because it does not offer high resolution.</a></p> <p>So, I decided to use a stopWatch Class due to its high resolution according to specifications.</p> <p>But according to my VB.NET code below it seems to me that the whole "dotnet adventure" is impossible. That is because when I press Button1 the whole form it freezes and I cannot press Button2 to stop the timer.</p> <p>Is there anything wrong with my code? What should I do to have the functionality described above?</p> <p>Thanks in advance!</p> <p><pre> Public Class Form1</p> <code>Private enableTime As TimeSpan Private stopWatch As New Stopwatch() Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click stopWatch.Start() If stopWatch.IsHighResolution Then Do If stopWatch.ElapsedTicks.Equals(TimeSpan.TicksPerSecond) Then enableTime = enableTime + TimeSpan.FromSeconds(1) TextBox1.Text = enableTime.ToString stopWatch.Restart() End If If Not stopWatch.IsRunning Then Exit Do End If Loop End If End Sub Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click stopWatch.Stop() stopWatch.Reset() End Sub </code></pre> <p>End Class</p>
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    1. COYou still aren't going to get the resolution you want, even if you could figure out threading and UI updates. See how you are checking `stopWatch.ElapsedTicks.Equals(TimeSpan.TicksPerSecond)`? That might never be true. While your loop is running those ticks will slide out from under you-- you won't see them all. And even if you did, you will lose more resolution as you restart the timer. Drift is inevitable. This isn't a problem with .NET, it's a basic feature of computers (at least the ones you're using).
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    2. COIn my own point of view the resolution that I miss with the main concept above is a tiny number of nanoseconds so the resolution is as good as possible. But I admit the fact that I might be wrong!
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    3. COWhat is the point of the resolution you want? Is it just so you don't 'miss' a second, like the person did in the linked question? Or do you actually need a bunch of decimal places?
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