easy and fast way to convert an int to binary?

Question

What I am looking for is something like PHPs decbin function in C#. That function converts decimals to its representation as a string.

For example, when

Answer 1

This is my answer:

    static bool[] Dec2Bin(int value)
    {
        if (value == 0) return new[] { false };
        var n = (int)(Math.Log(value) / Math.Log(2));
        var a = new bool[n + 1];
        for (var i = n; i >= 0; i--)
        {
            n = (int)Math.Pow(2, i);
            if (n > value) continue;
            a[i] = true;
            value -= n;
        }
        Array.Reverse(a);
        return a;
    }

Using Pow instead of modulo and divide so i think it's faster way.