using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.ComponentModel;
using System.Runtime.InteropServices;
using System.Windows.Forms;

namespace Test_C_Shap
{
    static class Program
    {
        [DllImport("user32.dll")]
        public static extern int SetForegroundWindow(IntPtr hWnd);
        static void Main()
        {
            
            Process[] processes = Process.GetProcessesByName("notepad");

            foreach (Process proc in processes)
            {
                SetForegroundWindow(proc.MainWindowHandle);
                SendKeys.SendWait("^(s)");
            }
        }
    }
}