C# 管道通信 （client —— server）Framework2.0版本也可用

//管道服务类
public class PipServer
    {
        [DllImport("kernel32.dll", SetLastError = true)]

        public static extern SafeFileHandle CreateNamedPipe(

           String pipeName,  //管道名 

           uint dwOpenMode,//管道类型 

           uint dwPipeMode,//管道参数 

           uint nMaxInstances,//管道能创建的最大实例数量 

           uint nOutBufferSize, //输出缓冲区长度 0表示默认

           uint nInBufferSize,//输入缓冲区长度 0表示默认 

           uint nDefaultTimeOut,//超时时间 

           IntPtr lpSecurityAttributes);//指定一个SECURITY_ATTRIBUTES结构,或者传递零值 

        [DllImport("kernel32.dll", SetLastError = true)]

        public static extern int ConnectNamedPipe(

           SafeFileHandle hNamedPipe,

           IntPtr lpOverlapped);

        public const uint DUPLEX = (0x00000003);

        public const uint FILE_FLAG_OVERLAPPED = (0x40000000);

        public class Client
        {
            public SafeFileHandle handle;

            public FileStream stream;
        }

        public delegate void RecivedMessageDelegate(string message);

        public delegate void MessageReceivedHandler(Client client, string message);

        public event MessageReceivedHandler MessageReceived;

        public const int BUFFER_SIZE = 4096;

        string pipeName;

        Thread listenThread;

        bool running;

        List<Client> clients;

        public string PipeName
        {
            get { return this.pipeName; }

            set { this.pipeName = value; }
        }

        public bool Running
        {
            get { return this.running; }
        }

        public PipServer()
        {
            this.clients = new List<Client>();
        }

        public void Start()
        {
            this.listenThread = new Thread(new ThreadStart(ListenForClients));

            this.listenThread.Start();

            this.running = true;
        }

        private void ListenForClients()
        {
            while (true)
            {
                SafeFileHandle clientHandle =

                CreateNamedPipe(
                     this.pipeName,

                     DUPLEX | FILE_FLAG_OVERLAPPED,

                     0,

                     255,

                     BUFFER_SIZE,

                     BUFFER_SIZE,

                     0,

                     IntPtr.Zero);

                if (clientHandle.IsInvalid)

                    return;

                int success = ConnectNamedPipe(clientHandle, IntPtr.Zero);

                if (success == 0)

                    return;

                Client client = new Client();

                client.handle = clientHandle;

                lock (clients)

                    this.clients.Add(client);

                Thread readThread = new Thread(new ParameterizedThreadStart(Read));

                readThread.Start(client);
            }
        }

        private void Read(object clientObj)
        {
            Client client = (Client)clientObj;

            client.stream = new FileStream(client.handle, FileAccess.ReadWrite, BUFFER_SIZE, true);

            byte[] buffer = new byte[BUFFER_SIZE];

            //ASCIIEncoding encoder = new ASCIIEncoding();

            UTF8Encoding encoder = new UTF8Encoding();//可以传汉字

            while (true)
            {
                int bytesRead = 0;

                try
                {
                    bytesRead = client.stream.Read(buffer, 0, BUFFER_SIZE);
                }
                catch
                {
                    break;
                }

                if (bytesRead == 0)

                    break;


                if (this.MessageReceived != null)

                    this.MessageReceived(client, encoder.GetString(buffer, 0, bytesRead));
            }
            client.stream.Close();

            client.handle.Close();

            lock (this.clients)

                this.clients.Remove(client);
        }

        public void SendMessage(string message)
        {
            lock (this.clients)
            {
                ASCIIEncoding encoder = new ASCIIEncoding();

                byte[] messageBuffer = encoder.GetBytes(message);

                foreach (Client client in this.clients)
                {
                    client.stream.Write(messageBuffer, 0, messageBuffer.Length);

                    client.stream.Flush();
                }
            }
        }
    }

//启动管道服务
public partial class Form_PipServer : Form
    {
        public Form_PipServer()
        {
            InitializeComponent();
        }
     
        private void button1_Click(object sender, EventArgs e)
        {          
            ServerPort serverPort;
            try
            {
                serverPort = new ServerPort(this, new PipServer.RecivedMessageDelegate(DisplayMessage));

                serverPort.pipeServer = new PipServer();

                serverPort.PipServerStart();

            }
            catch
            { }

        }

        void DisplayMessage(string message)
        {
            textBox1.Text += message + "
";
        }
        

        public class ServerPort
        {

            private Delegate sendMessage = null;

            private ContainerControl mainForm;

            public PipServer pipeServer = null;

            public ServerPort(ContainerControl form, Delegate sendmessage)
            {
                mainForm = form;

                sendMessage = sendmessage;
            }

            void SendMsg(string msg)
            {
                this.mainForm.Invoke(sendMessage, new Object[] { msg });
            }

            void PipeServer_MessageReceived(PipServer.Client client, string message)
            {
                if (!message.Equals(""))
                {
                    SendMsg("接收到的信息是：" + message);
                }
                else
                {
                    SendMsg("消息未收到？？？");
                }
            }

            public void MessageSend()
            {

            }

            public void PipServerStart()
            {
                try
                {
                    if (!this.pipeServer.Running)
                    {
                        this.pipeServer.PipeName = "\\.\Pipe\piperulecfg";//管道名称

                        this.pipeServer.Start();

                        this.pipeServer.MessageReceived += new PipServer.MessageReceivedHandler(PipeServer_MessageReceived);
                    }
                }
                catch
                {
                }
            }
        }
    }

//客户端类 

public class PipClient
    {
        [DllImport("kernel32.dll", SetLastError = true)]

        public static extern SafeFileHandle CreateFile(

           String pipeName,

           uint dwDesiredAccess,

           uint dwShareMode,

           IntPtr lpSecurityAttributes,

           uint dwCreationDisposition,

           uint dwFlagsAndAttributes,

           IntPtr hTemplate);

        public const uint GENERIC_READ = (0x80000000);

        public const uint GENERIC_WRITE = (0x40000000);

        public const uint OPEN_EXISTING = 3;

        public const uint FILE_FLAG_OVERLAPPED = (0x40000000);

        public delegate void MessageReceivedHandler(string message);

        public event MessageReceivedHandler MessageReceived;

        public const int BUFFER_SIZE = 4096;

        string pipeName;

        private FileStream stream;

        private SafeFileHandle handle;

        Thread readThread;

        bool connected;

        public bool Connected
        {
            get { return this.connected; }
        }

        public string PipeName
        {
            get { return this.pipeName; }

            set { this.pipeName = value; }
        }

        public void Connect()
        {
            this.handle =

               CreateFile(  //管道属于一种特殊的文件 

                  this.pipeName, //创建的文件名 

                  GENERIC_READ | GENERIC_WRITE, //文件模式 

                  0,               //是否共享

                  IntPtr.Zero, //指向一个SECURITY_ATTRIBUTES结构的指针 

                  OPEN_EXISTING,//创建参数 

                  FILE_FLAG_OVERLAPPED,//文件属性(隐藏,只读)NORMAL为默认属性 

                  IntPtr.Zero);//模板创建文件的句柄 

            if (this.handle.IsInvalid)
                return;

            this.connected = true;

            this.stream = new FileStream(this.handle, FileAccess.ReadWrite, BUFFER_SIZE, true);

            this.readThread = new Thread(new ThreadStart(Read));

            this.readThread.Start();
        }


        public void Read()
        {
            byte[] readBuffer = new byte[BUFFER_SIZE];

            ASCIIEncoding encoder = new ASCIIEncoding();

            while (true)
            {
                int bytesRead = 0;

                try
                {
                    bytesRead = this.stream.Read(readBuffer, 0, BUFFER_SIZE);
                }
                catch
                {
                    break;
                }

                if (bytesRead == 0)
                    break;

                if (this.MessageReceived != null)

                    this.MessageReceived(encoder.GetString(readBuffer, 0, bytesRead));
            }
            this.stream.Close();

            this.handle.Close();
        }

        public void SendMessage(string message)
        {
            //ASCIIEncoding encoder = new ASCIIEncoding();

            UTF8Encoding encoder = new UTF8Encoding();//可以传汉字

            byte[] messageBuffer = encoder.GetBytes(message);

            this.stream.Write(messageBuffer, 0, messageBuffer.Length);

            this.stream.Flush();
        }
    }

//客户端发送消息到服务端 
public partial class Form_PipClient : Form
    {
        public Form_PipClient()
        {
            InitializeComponent();
        }
                
        private void button1_Click(object sender, EventArgs e)
        {
            string szInfo = textBox1.Text;
            ClientPort.MessagePipeStart(szInfo);
        }

        public class ClientPort
        {
            private static PipClient pipeClient;

            public static void MessagePipeStart(string szInfo)
            {
                if (pipeClient == null)
                {
                    pipeClient = new PipClient();

                    pipeClient.MessageReceived += new PipClient.MessageReceivedHandler(pipeClient_MessageReceived);
                }

                if (!pipeClient.Connected)
                {
                    pipeClient.PipeName = "\\.\Pipe\piperulecfg";

                    pipeClient.Connect();
                }

                if (pipeClient != null && pipeClient.Connected)
                {
                    MessageSend(szInfo);
                }
                else
                {
                    MessageBox.Show("连接建立失败，请确保服务端程序已经被打开。");
                }
            }

            static void MessageSend(string str)
            {
                pipeClient.SendMessage(str);
            }

            //客户端接收消息
            static void pipeClient_MessageReceived(string message)
            {

            }
        }
    }

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