ArrayList duplicate a text file VB.Net Exercise - Visual Basic Programming Course


ArrayList duplicate a text file


Create a program that reads from a text file and stores it to another text file by reversing the order of lines.

For example, an input text file like:

yesterday Real Madrid
won against
Barcelona FC

will be stored in an output text file like:

Barcelona FC
won against
yesterday Real Madrid


Imports System
Imports System.IO
Imports System.Collections
Namespace TextFileInvert
    Class Program
        Private Shared Sub Main(ByVal args As String())
            Console.Write("Introduce el nombre del fichero: ")
            Dim nombreArchivo As String = Console.ReadLine()

            If Not File.Exists(nombreArchivo) Then
                Console.Write("El archivo no existe!")
            End If

                Dim miArchivo As StreamReader
                miArchivo = File.OpenText(nombreArchivo)
                Dim line As String
                Dim miLista As ArrayList = New ArrayList()

                    line = miArchivo.ReadLine()
                    If line IsNot Nothing Then miLista.Add(line)
                Loop While line IsNot Nothing

                Dim miArchivoAlReves As StreamWriter = File.CreateText(nombreArchivo & "-reverse.txt")
                Dim tamanyoArchivo As Integer = miLista.Count

                For i As Integer = tamanyoArchivo - 1 To 0

            Catch e As Exception
                Console.WriteLine("Error, " & e.Message)
            End Try

        End Sub
    End Class
End Namespace

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