【Visual Studio Visual Csharp】Send Keystrokes To application Notepad

using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows.Forms; // make sure you have include using System.Runtime.InteropServices; for dllimport using System.Runtime.InteropServices; // make sure you have include using System.Diagnostics; for link to website using System.Diagnostics; // make sure you have include using System.Threading; for new thread (notepad) using System.Threading; namespace SendMendAndKey { public partial class Form1 : Form { [DllImport("user32.dll", EntryPoint = "FindWindowEx")] public static extern IntPtr FindWindowEx(IntPtr hwndParent, IntPtr hwndChild, string lpszClass, string lpszWindow); [DllImport("user32.dll", EntryPoint = "SendMessage")] public static extern IntPtr SendMessage(IntPtr hWnd, int Msg, int wParam, string lParam); [DllImport("user32.dll", EntryPoint = "FindWindow")] public static extern IntPtr FindWindow(string lpClassName, string lpWindowName); public Form1() { InitializeComponent(); } public Process process; int SendKeystrokesToNotepad(string text) { process = Process.Start("notepad.exe"); Thread.Sleep(500); IntPtr notepad, edit; notepad = FindWindow("notepad", null); if (notepad == null) { return 0; } edit = FindWindowEx(notepad, new IntPtr(0), "Edit", null); if (edit == null) { return 0; } // 0x00C2 is macro which is replace for EM_REPLACESEL SendMessage(edit, 0x00C2, 0, text); return 1; } private void Form1_Load(object sender, EventArgs e) { } private void button1_Click(object sender, EventArgs e) { // call method SendKeystrokesToNotepad(textBox1.Text); } private void button2_Click(object sender, EventArgs e) { process.Kill(); } } }