BACKUP SIMPLE EN 100 LIGNES

'comment faire un backup en moins de 100 lignes de code sans fioritures 
Public Class Form1
    Dim x As Integer

    ''' <summary>
    ''' on charge les drives d
    ''' </summary>
    ''' <param name="sender"></param>
    ''' <param name="e"></param>
    ''' <remarks></remarks>
    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        Try
            For x = 0 To My.Computer.FileSystem.Drives.Count
                ComboBox1.Items.Add(My.Computer.FileSystem.Drives.Item(x))
            Next
        Catch ex As Exception
        End Try
    End Sub

    ''' <summary>
    ''' c'est le coeur du programme srcdir est un répertoire
    ''' destDrive est un disque
    ''' </summary>
    ''' <param name="srcdir"></param>
    ''' <param name="destDrive"></param>
    ''' <remarks></remarks>
    Private Sub backup(ByVal srcdir As String, ByVal destDrive As String)
        Dim src, dest, log As String
        log = String.Empty
        For Each file As String In My.Computer.FileSystem.GetFiles(srcdir, FileIO.SearchOption.SearchAllSubDirectories, "*.*")
            src = file
            dest = Replace(file, IO.Path.GetPathRoot(srcdir), destDrive)
            Try
                If IO.File.Exists(dest) Then
                    If Date.Compare(My.Computer.FileSystem.GetFileInfo(src).LastWriteTime, My.Computer.FileSystem.GetFileInfo(dest).LastWriteTime) = 0 Then
                        'le fichier est le même à 99,999%
                    Else
                        'overwrite
                        My.Computer.FileSystem.CopyFile(src, dest, True)
                    End If
                Else
                    'copy
                    My.Computer.FileSystem.CopyFile(src, dest, False)
                End If

            Catch ex As Exception
                log = log & Now.ToShortDateString & " " & Now.ToLongTimeString & "." & Now.Millisecond & ex.Message & vbCrLf
            End Try

            If ProgressBar1.Value = 99 Then ProgressBar1.Value = 1

            ProgressBar1.Value = ProgressBar1.Value + 1
            Application.DoEvents()
        Next
        If log = String.Empty Then
            '  MsgBox("Pas d'erreurs", MsgBoxStyle.Information)
        Else
            My.Computer.FileSystem.WriteAllText(Application.StartupPath & "\" & Today.ToLongDateString & ".log", log, True)
            If MessageBox.Show("il y a eu des erreurs," & vbCrLf & "voulez vous voir le log maintenant?", Application.ProductName, MessageBoxButtons.YesNo, MessageBoxIcon.Error) = Windows.Forms.DialogResult.Yes Then
                Process.Start("notepad.exe", Application.StartupPath & "\" & Today.ToLongDateString & ".log")
            End If

        End If
    End Sub

    ''' <summary>
    ''' pour sélectionner la source du backup 
    ''' </summary>
    ''' <param name="sender"></param>
    ''' <param name="e"></param>
    ''' <remarks></remarks>
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Try
            Dim fdb As New FolderBrowserDialog
            If fdb.ShowDialog = Windows.Forms.DialogResult.OK Then
                Label1.Text = fdb.SelectedPath
                Label2.Text = Replace(Label1.Text, "C:\", ComboBox1.SelectedItem.ToString)
            End If

        Catch ex As Exception
            Label2.Text = "Selectionner un drive et recommencer"
        End Try
    End Sub
    ''' <summary>
    ''' c'est parti maintenant qu'on a toutes les infos
    ''' </summary>
    ''' <param name="sender"></param>
    ''' <param name="e"></param>
    ''' <remarks></remarks>
    Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
        ProgressBar1.Style = ProgressBarStyle.Marquee
        ProgressBar1.Value = 1
        backup(Label1.Text, ComboBox1.SelectedItem.ToString)
        ProgressBar1.Style = ProgressBarStyle.Blocks
        ProgressBar1.Value = 100
    End Sub
End Class