C＃数组 - 返回的字节数超过预期

Question

我写了一个测试方法，涉及为RS232串行通信应用程序编写/读取数组

    private void RS232TestCommand()
    {
        byte[] test = { 0xAA, 0xBB, 0xCC, 0xDD, 0xEE, 0xFF };

        for (int i = 0; i < 10; i++)
        {

            // Send test command
            comport.Write(test, 0, test.Length);
            LogOutgoing(LogMsgType.Outgoing, "Find Serial Command Sent" + "\n");

            // Read response and store in buffer
            int bytes = comport.BytesToRead;
            byte[] response = new byte[bytes];
            comport.Read(response, 0, response.Length);
            LogIncoming(LogMsgType.Incoming, ByteArrayToHexString(response) + "\n");

此日志只能读取{AA，BB，CC，DD，EE，FF}，但它似乎也包含下面显示的“ComboByte []”。

            // Create 4 byte array to hold first 4 bytes
            var firstfour = new byte[4];
            Array.Copy(test,firstfour,firstfour.Length);

            // Convert i to a hex value
            byte iHex = (byte)i;
            byte[] iHexArray = { iHex };
            LogOutgoing(LogMsgType.Outgoing, "Short Address" + i.ToString() + "\n");

            // Combine iHex with firstfour to create a new byte[] 
            byte[] ComboByte = {iHex, firstfour[0], firstfour[1], firstfour[2], firstfour[3] };
            comport.Write(ComboByte, 0, ComboByte.Length);
        }
    }

输出对于i = 0（AA，BB，CC，DD，EE，FF）是正确的，但是对于i = 1 +，响应看起来像“ComboByte”+“响应”......或类似{82 ，AA，BB，CC，DD，E0,01，AA，BB，CC，DD，EE，FF}。

如何确保我只返回“Response”字节数组？