How to hide or show TabPage of TabControl

C# 的TabControl功能严重不足, 尤其是你用它来制作Wizard界面时候, 下面代码会有所帮助的.

namespace LiuHarry.Utils.Components
{
  using System;
  using System.Windows.Forms;

  public class TabControlHelper
  {
      private TabControl m_tabControl;

      public TabControlHelper(TabControl tabCtrl)
      {
          this.m_tabControl = tabCtrl;
      }

      public void HideTabPage(TabPage tp)
      {
          if (this.m_tabControl.TabPages.Contains(tp))
          {
              this.m_tabControl.TabPages.Remove(tp);
          }
      }

      private void InsertTabPage(TabPage tabpage, int index)
      {
          if ((index < 0) || (index > this.m_tabControl.TabCount))
          {
              throw new ArgumentException("Index out of Range.");
          }
          this.m_tabControl.TabPages.Add(tabpage);
          if (index < (this.m_tabControl.TabCount - 1))
          {
              do
              {
                  this.SwapTabPages(tabpage, this.m_tabControl.TabPages[this.m_tabControl.TabPages.IndexOf(tabpage) - 1]);
              }
              while (this.m_tabControl.TabPages.IndexOf(tabpage) != index);
          }
          this.m_tabControl.SelectedTab = tabpage;
      }

      public void ShowTabPage(TabPage tp)
      {
          this.ShowTabPage(tp, this.m_tabControl.TabPages.Count);
      }

      public void ShowTabPage(TabPage tp, int index)
      {
          if (!this.m_tabControl.TabPages.Contains(tp))
          {
              this.InsertTabPage(tp, index);
          }
      }

      private void SwapTabPages(TabPage tp1, TabPage tp2)
      {
          if (!(this.m_tabControl.TabPages.Contains(tp1) && this.m_tabControl.TabPages.Contains(tp2)))
          {
              throw new ArgumentException("TabPages must be in the TabControls TabPageCollection.");
          }
          int index = this.m_tabControl.TabPages.IndexOf(tp1);
          int num2 = this.m_tabControl.TabPages.IndexOf(tp2);
          this.m_tabControl.TabPages[index] = tp2;
          this.m_tabControl.TabPages[num2] = tp1;
          this.m_tabControl.SelectedIndex = this.m_tabControl.SelectedIndex;
          string text = tp1.Text;
          string str2 = tp2.Text;
          tp1.Text = str2;
          tp2.Text = text;
      }
  }
}