c#處理序間通訊（Inter-Process Communication）

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c#處理序間通訊（IPC, Inter-Process Communication）

接收端：

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Windows.Forms;using System.Runtime.InteropServices;  //for  MarshalAsnamespace receive{    public partial class Receive : Form    {public Receive()        {            InitializeComponent();        }        protected override void DefWndProc(ref System.Windows.Forms.Message m)          //重構此函數接收資料        {            switch (m.Msg)            {                case Message.WM_TEST:  //確定類型後，處理資料                     string  message = string.Format("收到訊息！參數為：{0},{1},{2}", m.Msg, m.WParam, m.LParam);                    label1.Text = message;                    break;                default:                    base.DefWndProc(ref m);                    break;            }        }    }    class Message    {        public const int USER = 0X0400;        public const int WM_TEST = USER + 101;        public const int WM_MSG = USER + 102;    }}

發送端：

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Windows.Forms;using System.Runtime.InteropServices;  //for DllImportnamespace send{    public partial class Form1 : Form    {        [DllImport("User32.dll", EntryPoint = "SendMessage")]        private static extern int SendMessage(int hWnd, int msg, int wParam, int lParam);      //發送訊息        [DllImport("User32.dll", EntryPoint = "FindWindow")]        private static extern int FindWindow(string lpClassName, string lpWindowName);      //擷取另一個進程的視窗控制代碼        public Form1()        {            InitializeComponent();        }        private void button1_Click(object sender, EventArgs e)        {            int hWnd = FindWindow(null, @"Receive");             SendMessage(hWnd, Message.WM_TEST, 99, 100);//參數1、視窗控制代碼。2 、訊息類型。 3、資料1。 4、資料2        }    }    class Message    {        public const int USER = 0X0400;        public const int WM_TEST = USER + 101;      //簡單的資料轉送類型，傳兩個整數。        public const int WM_MSG = USER + 102;    }}

比較複雜的字串傳輸：

發送端：

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Windows.Forms;using System.Runtime.InteropServices;  //for DllImportnamespace send{    public partial class Form1 : Form    {        [DllImport("User32.dll", EntryPoint = "SendMessage")]       // private static extern int SendMessage(int hWnd, int msg, int wParam, int lParam);       //發送訊息        private static extern int SendMessage(int hWnd, int msg, int wParam, ref COPYDATASTRUCT lParam);           [DllImport("User32.dll", EntryPoint = "FindWindow")]        private static extern int FindWindow(string lpClassName, string lpWindowName);      //擷取另一個進程的視窗控制代碼        const int WM_COPYDATA = 0x004A;        public Form1()        {            InitializeComponent();        }        private void button1_Click(object sender, EventArgs e)        {            int hWnd = FindWindow(null, @"Receive");            string message = "你好訊息成功發送！";            int i = message.Length;            byte[] sarr = System.Text.Encoding.Default.GetBytes(message);            COPYDATASTRUCT cds;            cds.dwData = (IntPtr)100;            cds.lpData = message;            cds.cbData = sarr.Length+1;         //此值錯誤會引發接收端崩潰            SendMessage(hWnd, WM_COPYDATA, 0, ref cds);        }    }    public struct COPYDATASTRUCT    {        public IntPtr dwData;        public int cbData;        [MarshalAs(UnmanagedType.LPStr)]        public string lpData;    }}

View Code

接收端：

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Windows.Forms;using System.Runtime.InteropServices;  //for  MarshalAsnamespace receive{    public partial class Receive : Form    {        const int WM_COPYDATA = 0x004A;        const int WM_MYSYMPLE = 0x005A;        public Receive()        {            InitializeComponent();        }        protected override void DefWndProc(ref System.Windows.Forms.Message m)        {            switch (m.Msg)            {                case WM_COPYDATA:                    COPYDATASTRUCT myStr = new COPYDATASTRUCT();                    Type myType = myStr.GetType();                    myStr = (COPYDATASTRUCT)m.GetLParam(myType);    //m中擷取LParam參數以myType類型的方式，讓後轉換問結構體。                    label1.Text = myStr.lpData;                    break;                default:                    base.DefWndProc(ref m);                    break;            }        }    }    public struct COPYDATASTRUCT    {        public IntPtr dwData;        public int cbData;        [MarshalAs(UnmanagedType.LPStr)]        public string lpData;    }}

View Code

下載：連結：http://pan.baidu.com/s/1c0lWpt2 密碼：yvzz

其他方法參考：

http://blog.csdn.net/feiren127/article/details/5459827

附：在程式中使用代碼啟動程式

using System.Diagnostics;   // for ProcessStartInfoProcessStartInfo startInfo = new ProcessStartInfo();startInfo.FileName = @"C:\Users\dell\Documents\Visual Studio 2010\Projects\receive\receive\bin\Debug\receive.exe";Process pro = new Process();pro.StartInfo = startInfo;pro.Start();        //開啟IntPtr hWnd = pro.MainWindowHandle;    //進程的控制代碼pro.Kill();            //關閉

 

c#處理序間通訊（Inter-Process Communication）