using System;

using System.IO;

​

namespace StreamWriterReaderExample

{

  class Program

  {

    static void Main()

    {

      string filePath = @"C:\Users\horva\OneDrive\Desktop\C#\file\europe.txt";

      FileStream fileStream = new FileStream(filePath, FileMode.Create, FileAccess.Write);

​

      using (StreamWriter streamWriter = new StreamWriter(fileStream))//using struct

      {

        streamWriter.WriteLine("Russia has population about 145,934,000");

        //some code here

        streamWriter.WriteLine("Germany has population about 83,783,000");

        //some code here

        streamWriter.WriteLine("Croatia has population about 3,500,000");

        //closes the fileStream, and deletes its memory allocation

        //streamWriter.Close();//optionally because it is automatically called

      }

      Console.WriteLine("europe.txt created");

​

      FileStream fileStream2 = new FileStream(filePath, FileMode.Open, FileAccess.Read);

      using (StreamReader streamReader = new StreamReader(fileStream2))

      {

        Console.WriteLine("\nFile read. File content is:");

​

        //to read full file

        //string content = streamReader.ReadToEnd();

        //Console.WriteLine(content);

​

        //to read part-by-part (10 characters)

        //buffer -> temporary memory area where the information is kept before printing

        char[] buffer = new char[10];

        int char_count;

        do

        {

          char_count = streamReader.Read(buffer, 0, buffer.Length);

          string s1 = new string(buffer);

          Console.WriteLine(s1);

        } while (char_count > 0);

      }

    }

  }

}

​