using System;
using System.IO;
using System.Text;
using System.Windows.Forms;

namespace text_input_all
{
	class Program
	{
		[STAThread]
		static void Main(string[] args)
		{

			OpenFileDialog openFileDialog = new OpenFileDialog();
			openFileDialog.Filter = "テキスト|*.txt|全て|*.*";
			openFileDialog.FilterIndex = 2;
			openFileDialog.InitialDirectory = @"C:\";

			if (openFileDialog.ShowDialog() != DialogResult.OK)
			{
				return;
			}

			Console.WriteLine(openFileDialog.FileName);

			string path = openFileDialog.FileName;
			if ( File.Exists(path) )
			{
				Console.WriteLine($"{path} は存在しています" );
			}

			// SHIFT_JIS
			Encoding Enc = Encoding.GetEncoding(932);

			try
			{
				using (StreamReader ReadFile = new StreamReader(path, Enc))
				{
					// 読込み
					string Text = ReadFile.ReadToEnd();

					// 全て読み込んでいるので閉じる
					ReadFile.Close();

					Console.WriteLine(Text);
				}

			}
			catch (Exception ex)
			{
				Console.WriteLine(ex.Message);
			}

			Console.ReadLine();
		}
	}
}