c# tcp传输文件代码

以下是一个用C#实现的TCP传输文件的示例代码：

服务端：

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

class Server
{
    static void Main(string[] args)
    {
        TcpListener listener = new TcpListener(IPAddress.Any, 1234);
        listener.Start();
        Console.WriteLine("等待客户端连接...");
        TcpClient client = listener.AcceptTcpClient();
        Console.WriteLine("客户端已连接");

        NetworkStream stream = client.GetStream();
        byte[] buffer = new byte[1024];

        // 读取文件名
        int byteCount = stream.Read(buffer, 0, buffer.Length);
        string fileName = Encoding.UTF8.GetString(buffer, 0, byteCount);

        // 读取文件内容
        using (FileStream fileStream = File.Create(fileName))
        {
            while ((byteCount = stream.Read(buffer, 0, buffer.Length)) > 0)
            {
                fileStream.Write(buffer, 0, byteCount);
            }
        }

        Console.WriteLine("文件传输完成");
        client.Close();
        listener.Stop();
    }
}

客户端：

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

class Client
{
    static void Main(string[] args)
    {
        TcpClient client = new TcpClient();
        client.Connect(IPAddress.Parse("127.0.0.1"), 1234);
        NetworkStream stream = client.GetStream();

        // 发送文件名
        string fileName = "test.txt";
        byte[] buffer = Encoding.UTF8.GetBytes(fileName);
        stream.Write(buffer, 0, buffer.Length);

        // 发送文件内容
        using (FileStream fileStream = File.OpenRead(fileName))
        {
            while (fileStream.Position < fileStream.Length)
            {
                int byteCount = fileStream.Read(buffer, 0, buffer.Length);
                stream.Write(buffer, 0, byteCount);
            }
        }

        Console.WriteLine("文件传输完成");
        client.Close();
    }
}

需要注意的是，以上示例代码没有添加任何异常处理，实际使用中需要根据实际情况进行添加。