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

class filexercise3
{
    public static void Main()
    {
        string fileName = @"mytest.txt";
        int count;
        try
            {
                // Delete the file if it exists.
                if (File.Exists(fileName))
                    {
                        File.Delete(fileName);
                    }
                Console.Write("\n\n Count the number of lines in 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");
                    fileStr.WriteLine(" test line 4");
                    fileStr.WriteLine(" test line 5");
                    fileStr.WriteLine(" Test line 6");
                }
                using (StreamReader sr = File.OpenText(fileName))
                {
                    string s = "";
                    count=0;
                    Console.WriteLine(" Here is the content of the file mytest.txt : ");
                    while ((s = sr.ReadLine()) != null)
                        {
                            Console.WriteLine(s);
                            count++;
                        }
                    Console.WriteLine("");
                }
                Console.Write(" The number of lines in  the file {0} is : {1} \n\n",fileName,count);
            }
        catch (Exception MyExcep)
            {
                Console.WriteLine(MyExcep.ToString());
            }
    }
}