Hiding and Showing TabPages in tabControl

You could remove the tab page from the TabControl.TabPages collection and store it in a list. For example:

    private List<TabPage> hiddenPages = new List<TabPage>();

    private void EnablePage(TabPage page, bool enable) {
        if (enable) {
            tabControl1.TabPages.Add(page);
            hiddenPages.Remove(page);
        }
        else {
            tabControl1.TabPages.Remove(page);
            hiddenPages.Add(page);
        }
    }

    protected override void OnFormClosed(FormClosedEventArgs e) {
        foreach (var page in hiddenPages) page.Dispose();
        base.OnFormClosed(e);
    }

I think the answer is much easier.

To hide the tab you just can use the way you already tried or adressing the TabPage itself.

TabControl1.TabPages.Remove(TabPage1) 'Could be male
TabControl1.TabPages.Remove(TabPage2) 'Could be female

a.s.o.

Removing the TabPage does not destroy it and the controls on it. To show the corresponding tab again just use the following code

TabControl1.TabPages.Insert(0, TabPage1) 'Show male
TabControl1.TabPages.Insert(1, TabPage2) 'Show female