File Directory VB.Net

Imports System.Collections.Generic
Imports System.IO
Imports System.Linq
Module Module1
    Sub Main()
        Try
            Dim dirPath As String = "\\archives\2009\reports"
            Dim dirs = From folder In Directory.EnumerateDirectories(dirPath, "a_*",SearchOption.AllDirectories)
            For Each folder In dirs
                Console.WriteLine("{0}",folder.Substring(folder.LastIndexOf("\") + 1))
            Next
            Console.WriteLine("{0} directories found.",dirs.Count.ToString())
            Dim workDirs As List(Of String) = New List(Of String)
        Catch PathEx As Exception
            Console.WriteLine(PathEx.Message)
        End Try
    End Sub
End Module