Merging byte arrays in C#

I faced this problem twice. I had to merge 2 or more arrays to form another bigger byte array. So i wrote a method. This is it:

 public byte[] MergeOneDimensionByteArrays(params byte[][] array)
        {
            int Length = 0;
            for (int i = 0; i < array.Length; i++)
            {
                if (array[i] != null)
                {
                    Length += array[i].Length;
                }
            }
            byte[] bMain = new byte[Length];

            int Current = 0;
            for (int i = 0; i < array.Length; i++)
            {
                if (array[i] != null)
                {
                    for (int j = 0; j < array[i].Length; j++)
                    {
                        bMain[Current] = array[i][j];
                        Current++;
                    }
                }
            }
            return bMain;
        } 

I hope it helps.