title: how to stretch inner panel in windows form on full screen mode?
body: <p>I have a windows application that run in full screen and there are some panels inside my form which I want they stretch in width, I mean how i can add width=100% to these panel? </p>
  
  <p>As you see in the below image, right panel is my inner one(container panel) that should stretch, it contains many items: 2 panels,  toolstrip and a grid. I just set the Doc="Fill" and Anchor="top; right; left; bottom" to it but nothing changed.</p>
  
  <p><img src="https://i.stack.imgur.com/ZHIwF.gif" alt="enter image description here"></p>