Re: [aus-dotnet] TotalMilliseconds

[Alex Hoffman]

You might want to consider using performance counters via interop as 
shown below - higher resolution than DateTime ...
using System; ...

public class Counter
{
	[System.Runtime.InteropServices.DllImport("KERNEL32")]
	private static extern bool QueryPerformanceCounter(  ref long 
lpPerformanceCount);
	[System.Runtime.InteropServices.DllImport("KERNEL32")]
	private static extern bool QueryPerformanceFrequency( ref long 
lpFrequency);
	long elapsedCount = 0;
	long startCount = 0;

	public void Start()
	{
		startCount = 0;
		QueryPerformanceCounter(ref startCount);
	}
	
	public void Stop()
	{
		long stopCount = 0;
		QueryPerformanceCounter(ref stopCount);

		elapsedCount += (stopCount - startCount);
	}

	public void Clear()
	{
		elapsedCount = 0;
	}

	public float Seconds
	{
		get
		{
			long freq = 0;
			QueryPerformanceFrequency(ref freq);
			return((float) elapsedCount / (float) freq);
		}
	}

	public override string ToString()
	{
		return String.Format("{0} seconds", Seconds);
	}

	static long Frequency
	{
		get
		{
			long freq = 0;
			QueryPerformanceFrequency(ref freq);
			return freq;
		}
	}
	
	static long Value
	{
		get
		{
			long count = 0;
			QueryPerformanceCounter(ref count);
			return count;
		}
	}
}

Alex Hoffman


Coral Johnson said the following:
> It would seem that TotalMilliseconds has an approximate resolution of 10
> milliseconds.  However we need to record times accurate to 1 millisecond.
> What is the best way of accomplishing this?
>
> Regards
> Coral Johnson
> ___________________________________________
>
> NetLogica Pty Ltd
> 107 Scott St Westcourt QLD 4870, Australia
> Tel 07 4041 1431
> Mobile 0412 706 675
> Email coral.johnson@xxxxxxxxxxxxxxxx
>
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