How to change toolstrip overflow Priority

I want design a componet,it work like win7 explorer's directoy bar,it will add toolstrip item to reflect all directoy,I do this.but when the width less than all componet's width ,it will overflow some butt开发者_Python百科on.it first overflow the most left button,nomally it will overflow the most right button,how can I do this? thk

I do this in winforms,use the toolstrip