How to change tab items position in tabcontrol in WPF
<p>I wanna change my sub tabcontrol items' position like shown below.</p>

<pre><code> -------------------------------------------------------
 |                                                     |
 |                  TabItem2      TabeItem3            |
 |  TabItem1        -----------------------------------|
 |                  TabItem2.1      TabItem2.2         |
 |-----------------------------------------------------|
</code></pre>

<p>I have 2 tabcontrols, the first one contains TabItem1,TabItem2,TabItem3 and th second contains TabItem2.1 and TabItem2.2
what i want is to move the second tabcontrol position.</p>

<p>Help please!</p>