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-My code sutomatically adds a hyphen at certain positions in the string, but I am unable to delete the second hyphen if I want to edit what I've typed in before that. Is there a way to fix this?

Private Sub txtISBN_KeyPress(sender As System.Object, e As System.Windows.Forms.KeyPressEventArgs) Handles txtISBN.KeyPress
        If txtISBN.TextLength = 1 Then
        txtISBN.Text = txtISBN.Text + "-"
        txtISBN.SelectionStart = Len(txtISBN.Text)
    Else
        If txtISBN.TextLength = 9 Then
        txtISBN.Text = txtISBN.Text + "-"
        txtISBN.SelectionStart = Len(txtISBN.Text)
    Else
        If txtISBN.TextLength = 11 Then
        txtISBN.Text = txtISBN.Text + "-"
        txtISBN.SelectionStart = Len(txtISBN.Text)
    End If
    End If
    End If
End Sub
End Class
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  • Latest Post Latest Post by Icone
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If you prefer to use textbox, here.

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