Visual Basic.NET - Asignar valor a combobox o listbox

Private NombreProductos As New List(Of String) From {"Silla de lámina", _

                                                         "Silla acojinada", _

                                                         "Silla de plástico"}

    Private PrecioProductos As New List(Of Integer) From {100, _

                                                          125, _

                                                          75}

    Private Sub cargarProductos()

        tuComboBoxProductos.Items.Clear()

        For i = 0 To (NombreProductos.Count - 1)

            tuComboBoxProductos.Items.Add(NombreProductos(i).ToString)

        Next

    End Sub

    Private Sub tuForm_Load(sender As Object, e As EventArgs) Handles MyBase.Load

        cargarProductos()

    End Sub

    Private Sub tuComboBox_SelectedIndexChanged(sender As Object, e As EventArgs) Handles tuComboBoxProductos.SelectedIndexChanged

        If (tuComboBoxProductos.SelectedIndex = -1) = False Then

            Dim valorProductoSeleccionado As Integer = PrecioProductos(tuComboBoxProductos.SelectedIndex)

        End If

    End Sub