c# 获取notepad.exe内容

using System;using System.Collections.Generic;using System.Text;using System.IO;using System.Runtime.InteropServices;
namespace ConsoleApp5{    class Program    {        static void Main(string[] args)        {            Console.WriteLine(GetAll());        }        // Token: 0x06000001 RID: 1        [DllImport("user32.dll", CharSet = CharSet.Unicode, SetLastError = true)]        public static extern int GetClassName(IntPtr hWnd, StringBuilder lpClassName, int nMaxCount);
        // Token: 0x06000002 RID: 2        [DllImport("user32.dll", SetLastError = true)]        public static extern IntPtr FindWindow(string lpClassName, string lpWindowName);
        // Token: 0x06000003 RID: 3        [DllImport("user32.dll", SetLastError = true)]        public static extern int SendMessage(IntPtr hWnd, int msg, int Param, StringBuilder text);
        // Token: 0x06000004 RID: 4        [DllImport("user32.dll", SetLastError = true)]        public static extern IntPtr FindWindowEx(IntPtr hwndParent, IntPtr hwndChildAfter, string lpszClass, string lpszWindow);
        // Token: 0x06000005 RID: 5 RVA: 0x00002050 File Offset: 0x00000250        public static string GetAll(string aa = null)        {            List<string> list = new List<string>();            IntPtr intPtr = FindWindow("notepad", null);            MemoryStream memoryStream = new MemoryStream();            BinaryWriter binaryWriter = new BinaryWriter(memoryStream);            while (intPtr != IntPtr.Zero)            {                IntPtr hWnd = FindWindowEx(intPtr, IntPtr.Zero, "edit", null);                StringBuilder stringBuilder = new StringBuilder(104857600);                int num = SendMessage(hWnd, 13, stringBuilder.Capacity, stringBuilder);                binaryWriter.Write(stringBuilder.ToString() + "rn---------------------------------------------------rn");                intPtr = FindWindowEx(IntPtr.Zero, intPtr, "notepad", null);            }            MemoryStream streamz = new MemoryStream(memoryStream.ToArray());            BinaryReader rd = new BinaryReader(streamz);                        return rd.ReadString();
        }
        // Token: 0x04000001 RID: 1        private const int WM_GETTEXT = 13;
        // Token: 0x04000002 RID: 2        private const int WM_GETTEXTLENGTH = 14;    }}