Get Random number

public static int GetRandom(int pMinVal = , int pMaxVal = int.MaxValue)
        {
            int m = pMaxVal - pMinVal;
            int rnd = int.MinValue;
            decimal _base = (decimal)long.MaxValue;
            byte[] rndSeries = new byte[];
            RNGCryptoServiceProvider rng = new RNGCryptoServiceProvider();
            rng.GetBytes(rndSeries);
            long l = BitConverter.ToInt64(rndSeries, );
            rnd = (int)(Math.Abs(l) / _base * m);
            return pMinVal + rnd;
        }