Multisession [VB.Net]

vbimport
#1

Hi All,

  I try on this SDK this afternoon, but finally i stuck at multisession part.
  From what i know. If want to burn a cd that burn b4 again, we have to use ImportIsoTrack. But i try many times, it still get bOk as false, and folder is nothing. is it anything i miss out?
 
  other function is ok, just when go into importIsoTrack, system always return false and folder always empty.

here is my simple code:

Private Sub drive_OnDoneCDInfo(ByVal pCDInfo As INeroCDInfo) Handles drive.OnDoneCDInfo
    TrackCount = pCDInfo.Tracks.Count
    currentcdinfo = pCDInfo
    bDone = True
End Sub

Private Sub BurnIt()
If cdSetCount <= CInt(lblCDQtyValue.Text) Then
Try
If drive.DeviceReady Then
tmrDeviceReady.Enabled = False
If isoCount < arrIsoTrack.Count Then
bDone = False
drive.CDInfo(NERO_CDINFO_FLAGS.NERO_READ_CD_TEXT)
While Not bDone = True
Application.DoEvents()
End While

                    Select Case burnDiscType
                        Case "CD"
                            If TrackCount &gt; 0 Then 'if tracks exist import last one
                                'For i As Integer = 0 To TrackCount - 1
                                bDone = False
                                drive.ImportIsoTrack(TrackCount, NERO_IMPORT_ISO_TRACK_FLAGS.NERO_IMPORT_ISO_ONLY)
                                While Not bDone = True
                                    Application.DoEvents()
                                End While
                                'Next
                            End If

                            drive.BurnIsoAudioCD("Album", "Title", True, arrIsoTrack(isoCount), Nothing, Nothing, NERO_BURN_FLAGS.NERO_BURN_FLAG_CLOSE_SESSION + NEROLib.NERO_BURN_FLAGS.NERO_BURN_FLAG_WRITE + NERO_BURN_FLAGS.NERO_BURN_FLAG_DETECT_NON_EMPTY_CDRW, iniSYS_CDB_CDBURNSPEED, NEROLib.NERO_MEDIA_TYPE.NERO_MEDIA_CD)
                        Case "DVD"
                            drive.BurnIsoAudioCD("Album", "Title", False, arrIsoTrack(isoCount), Nothing, Nothing, NEROLib.NERO_BURN_FLAGS.NERO_BURN_FLAG_WRITE + NERO_BURN_FLAGS.NERO_BURN_FLAG_DETECT_NON_EMPTY_CDRW, iniSYS_CDB_DVDBURNSPEED, NEROLib.NERO_MEDIA_TYPE.NERO_MEDIA_DVD_ANY)
                    End Select
                End If

            End If
        Catch ex As Exception
            MsgBox(ex.Message)
            LogError("frmBurnCD.BurnIt (1443): " & ex.Message)
        End Try
    End If
End Sub

Private Sub driver_OnDoneImport2(ByVal bOk As Boolean, ByVal pFolder As NeroFolder, ByVal pCDStamp As NeroCDStamp, ByVal pImportInfo As NeroImportDataTrackInfo, ByVal importResult As NERO_IMPORT_DATA_TRACK_RESULT) Handles drive.OnDoneImport2
If bOk = True Then
currentcdstamp = pCDStamp
originaliso = New NeroISOTrack
originaliso.RootFolder = pFolder
Dim r As New TreeNode

        r.ForeColor = System.Drawing.Color.Navy
        r.Text = "Root"
        r.Tag = pFolder
        trcompilation.Nodes.Add(r)
        For Each f As NeroFolder In pFolder.Folders
            Dim t As New TreeNode
            t.ForeColor = System.Drawing.Color.Navy
            t.Text = f.Name
            t.Tag = f
            r.Nodes.Add(t)
            'recursivefolderdisplay(f, t)
        Next
        For Each fi As NeroFile In pFolder.Files
            Dim t As New TreeNode
            t.ForeColor = System.Drawing.Color.Navy
            t.Text = fi.Name
            t.Tag = fi
            r.Nodes.Add(t)
        Next
        trcompilation.SelectedNode = r
    Else
        Dim r As New TreeNode
        Dim rf As New NeroFolder
        currentcdstamp = pCDStamp
        originaliso = New NeroISOTrack
        originaliso.RootFolder = rf
        r.Text = "Root"
        r.Tag = rf
        trcompilation.Nodes.Add(r)
        trcompilation.SelectedNode = r
    End If

    bDone = True
End Sub

Thx for reading, and waiting for some answer here.

Best Regards
SuNc