[mono-vb] FileSystem.FileOpen

[Easy_Rider9999]

I get this Error

LinuxErr: Application Error  at 15.05.2009 17:45:05 gstatus: tvMed_MouseMove
HotTracking CodeLoc: _frmImportText.mnuFileOpenT_Click Version: 0.7.8.33413
System.NullReferenceException: Object reference not set to an instance of an
object
  at Microsoft.VisualBasic.FileSystem.FileOpen (Int32 FileNumber,
System.String FileName, OpenMode Mode, OpenAccess Access, OpenShare Share,
Int32 RecordLength) [0x00000] in
/media/disk-1/Downloads/Linux/mono-basic-2.4/vbruntime/Microsoft.VisualBasic/Microsoft.VisualBasic/FileSystem.vb:291 
  at Repetit.net.T.SQLite.frmImportText.mnuFileOpentT_Click (System.Object
sender, System.EventArgs e) [0x00000] 
 Innerexception: 

In this procedure (as well in a similar procedure):

Private Sub mnuFileOpentT_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles mnuFileOpentT.Click
    Dim FileName As String
    Dim FileNr, fLen As Integer
    cdlg1.CheckFileExists = True
    If cdlg1.ShowDialog = Windows.Forms.DialogResult.OK Then
      Try
        FileName = cdlg1.FileName
        FileNr = FileSystem.FreeFile
        fLen = CInt(FileSystem.FileLen(FileName))
        FileSystem.FileOpen(FileNr, FileName, OpenMode.Input,
OpenAccess.Read, OpenShare.Shared)
        txtImport.Text = FileSystem.InputString(FileNr, fLen)

      Catch ex As Exception
#If Linux Then
        LinuxErr(ex, "_frmImportText.mnuFileOpenT_Click")
#Else
        Throw New ApplicationException("_frmImportText.mnuFileOpenT_Click
Error", ex)
#End If
      Finally
        Try
          FileSystem.FileClose(FileNr)
        Catch
        End Try
      End Try
      'FileNr = modFileFunc.Fileopener(FileName, modFileFunc.READFILE,
False)
      'txtImport.Text = InputString(FileNr, CInt(FileLen(FileName)))
      'FileClose(FileNr)
    End If
    

  End Sub

What can I do?

Regards

Hans


P.S. Execution wit .Net Framework gives not error. I get this error only
with Mono 2.4!
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