Correct way to use Random in multithread application [duplicate]

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I use something like this:

public static class StaticRandom
{
    static int seed = Environment.TickCount;

    static readonly ThreadLocal<Random> random =
        new ThreadLocal<Random>(() => new Random(Interlocked.Increment(ref seed)));

    public static int Rand()
    {
        return random.Value.Next();
    }
}

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