C# Replace bytes in Byte[]

Question

What is the best way to replace some bytes in a byte array??

For instance i have bytesFromServer = listener.Receive(ref groupEP); and i can do Bit

Answer 1

Something i pieced together... Going to test it soon. Credits from How do you convert Byte Array to Hexadecimal String, and vice versa?

     public byte[] ReplaceBytes(byte[] src, string replace, string replacewith)
    {
        string hex = BitConverter.ToString(src);
        hex = hex.Replace("-", "");
        hex = hex.Replace(replace, replacewith);
        int NumberChars = hex.Length;
        byte[] bytes = new byte[NumberChars / 2];
        for (int i = 0; i < NumberChars; i += 2)
            bytes[i / 2] = Convert.ToByte(hex.Substring(i, 2), 16);
        return bytes;
    }