hMailServer.Shared.ucWizard.ShowPage C# (CSharp) Méthode

        public bool ShowPage(int pageNo)
        {
            if (panelMiddle.Controls.Count > 0)
             {
            UserControl currentPage = panelMiddle.Controls[0] as UserControl;
            IWizardPage currentWizPage = currentPage as IWizardPage;

            bool nextEnabled = buttonNext.Enabled;
            bool previousEnabled = buttonPrevious.Enabled;
            bool cancelEnabled = buttonCancel.Enabled;

            buttonNext.Enabled = false;
            buttonPrevious.Enabled = false;
            buttonCancel.Enabled = false;

            try
            {
               if (!currentWizPage.OnLeavePage(pageNo > _currentPage))
                  return false;
            }
            catch (Exception ex)
            {
               MessageBox.Show(ex.Message);
               return false;
            }
            finally
            {
               buttonNext.Enabled = true;
               buttonPrevious.Enabled = true;
               buttonCancel.Enabled = true;
            }
             }

             _currentPage = pageNo;

             UserControl page = _pages[_currentPage];
             IWizardPage wizPage = page as IWizardPage;

             new TabOrderManager(page).SetTabOrder(TabOrderManager.TabScheme.AcrossFirst);

             panelMiddle.Controls.Clear();
             panelMiddle.Controls.Add(page);

             page.Dock = DockStyle.Fill;

             labelTitle.Text = wizPage.Title;

             EnableDisable();
             SetButtonTexts();

             wizPage.OnShowPage(_state);

             if (PageChanged != null)
            PageChanged(_currentPage+1, _pages.Count);

             return true;
        }