Get random numbers

gistfile1.cs

public static int[] getRandoms(int count, int max)
{
    int[] results = new int[count];
    var mask = new BitArray(max + 1);
    int counter = 0;
    while (counter < count)
    {
        int r = random.Next(max + 1);
        if (!mask[r])
        {
            results[counter] = r;
            mask[r] = true;
            counter++;
        }
    }

    return results;
}