Ok il concetto l'ho capito... ma se nella listbox ora volessi espandere le varie sottocartelle?codice:Imports System.IO Public Class Form1 Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load For Each di As DriveInfo In DriveInfo.GetDrives() driveList.Items.Add(di) Next End Sub Private Sub driveList_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles driveList.SelectedIndexChanged folderList.Items.Clear() Try Dim drive As DriveInfo = DirectCast(driveList.SelectedItem, DriveInfo) For Each dirInfo As DirectoryInfo In drive.RootDirectory.GetDirectories() folderList.Items.Add(dirInfo) Next Catch ex As Exception MessageBox.Show(ex.Message) End Try End Sub Private Sub folderList_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles folderList.SelectedIndexChanged fileList.Items.Clear() Dim dir As DirectoryInfo = DirectCast(folderList.SelectedItem, DirectoryInfo) For Each fi As FileInfo In dir.GetFiles() fileList.Items.Add(fi) Next End Sub End Class
Mi basta anche un link a qualke altro progetto o riferimento. Una volta instradato me la sbrigo io.

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