PInvoke SendKey

using System.Runtime.InteropServices;
using Systehttp://m.Windows.Forms;
static class KeyboardSend
{
    [DllImport("user32.dll")]
    private static extern void keybd_event(byte bVk, byte bScan, int dwFlags, int dwExtraInfo);
    private const int KEYEVENTF_EXTENDEDKEY = 1;
    private const int KEYEVENTF_KEYUP = 2;
    public static void KeyDown(Keys vKey)
    {
        keybd_event((byte)vKey, 0, KEYEVENTF_EXTENDEDKEY, 0);
    }
    public static void KeyUp(Keys vKey)
    {
        keybd_event((byte)vKey, 0, KEYEVENTF_EXTENDEDKEY | KEYEVENTF_KEYUP, 0);
    }
}

 

KeyboardSend.KeyDown(Keys.LWin);
KeyboardSend.KeyDown(Keys.D4);
KeyboardSend.KeyUp(Keys.LWin);
KeyboardSend.KeyUp(Keys.D4);

[출처] C# SendKeys를 사용하여 프로그래밍 방식으로 Windows 키를 누르는 방법|작성자 jeren914144