Convert SHIFT-JIS To UTF8

ConvertSHIFT_JISToUTF8.cs

//---Created by Gumpanat Keardkeawfa on 2018Aug02.---
//---Copyright © 2018 Auycro. All rights reserved.---

using System.IO;
using System.Text;

namespace ConsoleApp1
{
    class Program
    {
        static void Main(string[] args)
        {
            string path = args[0];
            string readText = File.ReadAllText(path, Encoding.GetEncoding(932));
            
            //BOM付けUTF8のテキストファイル
            StreamWriter sw = new StreamWriter(
                path, false, System.Text.Encoding.UTF8
                );
            sw.Write(readText);
            sw.Close();
        }
    }
}