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C# / .NET - get current machine time in milliseconds

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Created by:

aaliyah

471

C# / .NET it is possible to take machine time in milliseconds in following way.

Getting milli time with `Stopwatch.GetTimestamp` method example

Edit

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public static class TimeUtils
{
    public static long GetMilliseconds()
    {
        double timestamp = Stopwatch.GetTimestamp();
        double milliseconds = 1_000.0 * timestamp / Stopwatch.Frequency;
​
        return (long)milliseconds;
    }
}

Example:

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long t1 = TimeUtils.GetMilliseconds();
​
Thread.Sleep(1000);
​
long t2 = TimeUtils.GetMilliseconds();
long dt = t2 - t1;
​
Console.WriteLine(t2 + " - " + t1 + " = " + dt + " ms");

Output:

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197778624 - 197777623 = 1001 ms

Notes:
Stopwatch.GetTimestamp returns time from timer mechanism - system up time.
The best application of this time could be measuring how much time took some operations.