TabControl控件，有时候需要动态显示一个或者多个标签页，如果只是显示一个标签页的时候不想显示标签头，所以有可能隐藏头部的需求。
如下代码可以实现
public Form1()
{
InitializeComponent();
_tabControlItemSize = tabControl1.ItemSize;
_tabControlAppearance = tabControl1.Appearance;
_tabSizeMode = tabControl1.SizeMode;
}
private void showButton_Click(object sender, EventArgs e)
{
tabControl1.ItemSize = _tabControlItemSize;
tabControl1.Appearance = _tabControlAppearance;
tabControl1.SizeMode = _tabSizeMode;
}
private void hideButton_Click(object sender, EventArgs e)
{
tabControl1.ItemSize = new Size(0, 1);
tabControl1.Appearance = TabAppearance.FlatButtons;
tabControl1.SizeMode = TabSizeMode.Fixed;
}
private Size _tabControlItemSize;
private TabAppearance _tabControlAppearance;
private TabSizeMode _tabSizeMode;// 如果不设置此值，效果是另外一个效果
