[c#] How to hide TabPage from TabControl

I combined the answer from @Jack Griffin and the one from @amazedsaint (the dotnetspider code snippet respectively) into a single TabControlHelper.

The TabControlHelper lets you:

  • Show / Hide all tab pages
  • Show / Hide single tab pages
  • Keep the original position of the tab pages
  • Swap tab pages

public class TabControlHelper
{
    private TabControl _tabControl;
    private List<KeyValuePair<TabPage, int>> _pagesIndexed;
    public TabControlHelper(TabControl tabControl)
    {
        _tabControl = tabControl;
        _pagesIndexed = new List<KeyValuePair<TabPage, int>>();

        for (int i = 0; i < tabControl.TabPages.Count; i++)
        {
            _pagesIndexed.Add(new KeyValuePair<TabPage, int> (tabControl.TabPages[i], i ));
        }
    }

    public void HideAllPages()
    {
        for (int i = 0; i < _pagesIndexed.Count; i++)
        {
            _tabControl.TabPages.Remove(_pagesIndexed[i].Key);
        }
    }

    public void ShowAllPages()
    {
        for (int i = 0; i < _pagesIndexed.Count; i++)
        {
            _tabControl.TabPages.Add(_pagesIndexed[i].Key);
        }
    }

    public void HidePage(TabPage tabpage)
    {
        if (!_tabControl.TabPages.Contains(tabpage)) return;
        _tabControl.TabPages.Remove(tabpage);
    }

    public void ShowPage(TabPage tabpage)
    {
        if (_tabControl.TabPages.Contains(tabpage)) return;
        InsertTabPage(GetTabPage(tabpage).Key, GetTabPage(tabpage).Value);
    }

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

    private void SwapTabPages(TabPage tabpage1, TabPage tabpage2)
    {
        if (_tabControl.TabPages.Contains(tabpage1) == false || _tabControl.TabPages.Contains(tabpage2) == false)
            throw new ArgumentException("TabPages must be in the TabControls TabPageCollection.");

        int Index1 = _tabControl.TabPages.IndexOf(tabpage1);
        int Index2 = _tabControl.TabPages.IndexOf(tabpage2);
        _tabControl.TabPages[Index1] = tabpage2;
        _tabControl.TabPages[Index2] = tabpage1;
    }

    private KeyValuePair<TabPage, int> GetTabPage(TabPage tabpage)
    {
        return _pagesIndexed.Where(p => p.Key == tabpage).First();
    }
}

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