C#通过TCP通讯发送和读取16进制数组服务器数据

可以使用C#中的Socket类来实现TCP通信，并将数据转换为16进制格式发送和接收。以下是一个示例：

using System;
using System.Net;
using System.Net.Sockets;

public class TCPClient {
    private static Socket clientSocket;

    public static void Main() {
        // 连接到服务器
        Connect("127.0.0.1", 8888);

        // 发送数据
        byte[] sendBytes = { 0x01, 0x02, 0x03 };
        Send(sendBytes);

        // 接收数据
        byte[] receiveBytes = Receive();
        Console.WriteLine("Received message from server: " + BitConverter.ToString(receiveBytes));

        // 关闭连接
        Close();
    }

    private static void Connect(string ip, int port) {
        clientSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
        clientSocket.Connect(new IPEndPoint(IPAddress.Parse(ip), port));
        Console.WriteLine("Connected to server.");
    }

    private static void Send(byte[] sendBytes) {
        clientSocket.Send(sendBytes);
        Console.WriteLine("Sent message to server: " + BitConverter.ToString(sendBytes));
    }

    private static byte[] Receive() {
        byte[] receiveBytes = new byte[1024];
        int length = clientSocket.Receive(receiveBytes);
        byte[] messageBytes = new byte[length];
        Array.Copy(receiveBytes, messageBytes, length);
        return messageBytes;
    }

    private static void Close() {
        clientSocket.Shutdown(SocketShutdown.Both);
        clientSocket.Close();
        Console.WriteLine("Connection closed.");
    }
}

在这个示例中，首先通过 `Connect()` 方法连接到服务器，然后将要发送的数据转换为16进制格式，通过 `Send()` 方法发送数据。接收到的数据也是16进制格式，需要转换为字节数组，再返回给调用者。最后，通过 `Close()` 方法关闭连接。