using System;
using System.IO;
using System.Text;

class filexercise11
{
    public static void Main()
    {
        string fileName = @"mytest.txt";
        try
            {
                // Delete the file if it exists.
                if (File.Exists(fileName))
                    {
                        File.Delete(fileName);
                    }
                Console.Write("\n\n Read the first line from a file  :\n");
                Console.Write("---------------------------------------\n");
                // Create the file.
                using (StreamWriter fileStr = File.CreateText(fileName))
                {
                    fileStr.WriteLine(" test line 1");
                    fileStr.WriteLine(" test line 2");
                    fileStr.WriteLine(" Test line 3");
                }
                using (StreamReader sr = File.OpenText(fileName))
                {
                    string s = "";
                    Console.WriteLine(" Here is the content of the file mytest.txt : ");
                    while ((s = sr.ReadLine()) != null)
                        {
                            Console.WriteLine(s);
                        }
                    Console.WriteLine("");
                }
                Console.Write("\n The content of the first line of the file is :\n");
                if (File.Exists(fileName))
                    {
                        string[] lines = File.ReadAllLines(fileName);
                        Console.Write(lines[0]);
                    }
                Console.WriteLine();
            }
        catch (Exception MyExcep)
            {
                Console.WriteLine(MyExcep.ToString());
            }
    }
}