Visual Basic - hacer decrecer una variable en un do while??

Do While aux < pagos

    Dim pendiente As Integer = 10

    pendiente = pendiente - 1

    Dim row As String() = New String() {"", "", "", "", "", ""}

    row = New String() {1 + aux, Math.Round(total), "1", "1", "1", pendiente}

    DataGridView1.Rows.Add(row)

    aux += 1

Loop