c# how to run external program

Process ExternalProcess = new Process();
ExternalProcess.StartInfo.FileName = "Notepad.exe";
ExternalProcess.StartInfo.WindowStyle = ProcessWindowStyle.Maximized;
ExternalProcess.Start();
ExternalProcess.WaitForExit();

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Diagnostics;

namespace Demo_Console
{
    class Program
    {
        static void Main(string[] args)
        {
            Process ExternalProcess = new Process();
            ExternalProcess.StartInfo.FileName = "Notepad.exe";
            ExternalProcess.StartInfo.WindowStyle = ProcessWindowStyle.Maximized;
            ExternalProcess.Start();
            ExternalProcess.WaitForExit();
        }
    }
}