combobox to print preview question

[huey]

i am having trouble creating a command which will allow me to will display a print preview of all or individually selected items in my combo box. the only thing i get when i run the program is a blank print preview with nothing on it from the combo box. could someone please get me on the right road?? this is what my code looks like in my form:


Private Sub PrintSubjectsToolStripMenuItem1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles PrintSubjectsToolStripMenuItem1.Click

'begin the process for print the subject items.

With Me
If .subjectComboBox.SelectedIndex = -1 Then
'select (none) if nothing selected.
.subjectComboBox.SelectedIndex = 0

End If
If .subjectComboBox.SelectedIndex <> -1 Then
' items selected.
.PrintPreviewDialog1.Document = PrintDocument1
PrintPreviewDialog1.ShowDialog()


Else
'no item selected
MessageBox.Show("select a item from the book list", _
"print selection", MessageBoxButtons.OK, MessageBoxIcon.Exclamation)

End If

End With

End Sub