C# - MAC in ByteArray

//z.B. Value=ff:ff:ff:ff:ff:ff
private byte[] MACToByteArray(string Value)
{
    string[] Temp = Value.Split(':');
    int Length = Temp.Length;
    byte[] Rueckgabe = new byte[Length];
    for (int i = 0; i < Length; i++)
    {
        Rueckgabe[i] = Convert.ToByte(Temp[i], 16);
    }
    return Rueckgabe;
}