指定的参数超出了从c#中的网络获取数据的有效值范围

我正试图向传感器发送命令，并使用以下代码从中获取数据：

 const int PORT_NO = 3000;
        const string SERVER_IP = "192.168.2.44";

            //---listen at the specified IP and port no.---
            IPAddress localAdd = IPAddress.Any;
            TcpListener listener = new TcpListener(localAdd, PORT_NO);
            Console.WriteLine("Listening...");
            listener.Start();
            //---incoming client connected---
            TcpClient client = listener.AcceptTcpClient();
            NetworkStream nwStream = client.GetStream();
            //---write back the text to the client---
            byte[] buffersend = new byte[client.ReceiveBufferSize];
            buffersend = GetBytes("00010002000B0300010004C380");
            int bytesSend = nwStream.Read(buffersend, 0, client.ReceiveBufferSize);
           // Console.WriteLine("Sending back : " + dataReceived);
            nwStream.Write(buffersend, 0, bytesSend);
            //---get the incoming data through a network stream---
            byte[] buffer = new byte[client.ReceiveBufferSize];
            //---read incoming stream---
            int bytesRead = nwStream.Read(buffer, 0, client.ReceiveBufferSize);
            //---convert the data received into a string---
            string dataReceived = Encoding.ASCII.GetString(buffer, 0, bytesRead);
            Console.WriteLine("Received : " + dataReceived);

            client.Close();
            listener.Stop();
            Console.ReadLine();
        }

在这行int bytesSend = nwStream.Read(buffersend, 0, client.ReceiveBufferSize);中，我得到了这个错误：

Specified argument was out of the range of valid value

CCD_ 2是52并且CCD_ 3是8192

static byte[] GetBytes(string str)
        {
            byte[] bytes = new byte[str.Length * sizeof(char)];
            System.Buffer.BlockCopy(str.ToCharArray(), 0, bytes, 0, bytes.Length);
            return bytes;
        }

我对c#套接字编程很陌生。

byte[] buffersend = new byte[client.ReceiveBufferSize];
buffersend = GetBytes("00010002000B0300010004C380");
int bytesSend = nwStream.Read(buffersend, 0, client.ReceiveBufferSize);
nwStream.Write(buffersend, 0, bytesSend);

byte[] buffersend =  GetBytes("00010002000B0300010004C380");
nwStream.Write(buffersend, 0, buffersend.Length);