public void ShowSelectedItem() { numberTextBox.Text = ToNumber(SelectedUnit).ToString(); messageLabel.Text = string.Format(Resources.SelectUnitsFormSelectedUnits, SelectedUnit.GetOffOnName(CustomUnits)); if (SelectedUnit.IsAnalog()) { analogUnitsListBox.SelectedIndex = ToNumber(SelectedUnit) - 1; digitalUnitsListBox.SelectedIndex = -1; } else { digitalUnitsListBox.SelectedIndex = SelectedUnit - Unit.DigitalUnused; analogUnitsListBox.SelectedIndex = -1; } }