creating a print and preview button in vb.net

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VB

In my applicationwhich is in vb.net
i have 2 buttons first for browse and second for preview selected item now after selecting file with browse now i want to give an option for preview any suggestion
here is the code for browse button--
Private Sub btnBrowse_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnBrowse.Click
Using fold As New OpenFileDialog
fold.Filter = "document files (*.doc)|*.doc |richtext format(*.rtf) | *.rtf |All files (*.*)|*.*"
fold.Title = "Select file"
If fold.ShowDialog() = Windows.Forms.DialogResult.OK Then
' fold.FilterIndex = 2
fold.RestoreDirectory = True
MessageBox.Show("You selected " & fold.FileName)
End If
End Using
End Sub
thnx in advance :)