get file from directories and its sub directories

How can l loop through directories and its subdirectories. Here is my sample so far.

Dim source_dir_path As String = "C:\Users\tmp"
        Dim source_dir As New DirectoryInfo(source_dir_path)
        Dim I As Integer = 0

        For Each Dir As DirectoryInfo In source_dir.GetDirectories

            For Each file_info As FileInfo In Dir.GetFiles

                I += 1

                Dim new_file_name As String = file_info.LastWriteTime.ToString("MMddyyy-hhmmsstt") & "_" & I & file_info.Extension


                Dim copy_to As String = "C:\Users\tmp2\"

                file_info.CopyTo(copy_to & new_file_name)

            Next


        Next
VBdotnet2005Asked:
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x77Commented:
You need as Recursive method to do it.
Remove the debug sentences an uncomment the f.CopyTo line.

       
seq = 0
     BackupFiles(New DirectoryInfo("C:\Users\tmp"))

Private seq As Integer = 0
Public Sub BackupFiles(ByVal d As DirectoryInfo)
    For Each f In d.GetFiles
        'f.CopyTo(Path.Combine("C:\Users\tmp2\", f.LastWriteTime.ToString("MMddyyy-hhmmsstt") & "_" & seq & f.Extension))
        Debug.Print(Path.Combine("C:\Users\tmp2\", f.LastWriteTime.ToString("MMddyyy-hhmmsstt") & "_" & seq & f.Extension))
        seq += 1
    Next
    For Each d In d.GetDirectories
        Debug.Print(d.Name)
        BackupFiles(d)
    Next
End Sub

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Visual Basic.NET

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