[VB.Net] ทำโปรแกรมดูวีดีโอแล้วเปิดไฟล์ภาษาไทยไม่ได้ แล้วมันแสดงชื่อเป็นภาษอะไรไม่รู้ ช่วยแก้หน่อย ครับ

Imports WMPLib
Imports System.IO
Public Class Form1
    Dim playlist As IWMPPlaylist = Nothing
    Dim unsaved As String = My.Computer.FileSystem.SpecialDirectories.Temp & "\" & "Unsaved.m3u"

 Private Sub OpenFilesToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles OpenFilesToolStripMenuItem.Click
        Dim ofd As New OpenFileDialog
        ofd.RestoreDirectory = True
        ofd.Filter = ""
        If ofd.FilterIndex = 2 Then
            ofd.Multiselect = False
        Else
            ofd.Multiselect = True
        End If
        ofd.Title = "เปิดไฟล์"
        If ofd.ShowDialog = Windows.Forms.DialogResult.OK Then
            ListBox1.Items.Clear()
            Using sw As New StreamWriter(unsaved, False)
                For Each song As String In ofd.FileNames
                    sw.WriteLine(song)
                Next
            End Using
            ListBox1.Items.Clear()
            playlist = player.newPlaylist("Unsaved Playlist", unsaved)
            player.currentPlaylist = playlist

            For i = 0 To player.currentPlaylist.count - 1
                ListBox1.Items.Add(player.currentPlaylist.Item(i).name)
            Next
            ListBox1.SelectedItem = player.Ctlcontrols.currentItem.name
            Play1.Image = My.Resources.pause1
            My.Settings.LastPlaylist = unsaved
        End If
    End Sub