using System;

using System.IO;            

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World of files");

        string writeText = "Hello World!";  // Create a text string

        string writeText1 = "eerste file ";

         File.WriteAllText("c://filename.txt", writeText);

         string readText = File.ReadAllText("filename.txt");  // Read the contents of the file

         Console.WriteLine(readText);  // Output the conten

    }

}