I appreciate your prompt response. While I understand the functionality of ItemMinimizedTemplate and
from the sample project you provided, my requirement is slightly different am not looking at minimization of items. I need something like the one attached, i.e briefly i need to populate(always) the dropdown upon click with items as in outlook with some menuitems like in outlook.
a)Show more buttons
b)Show fewer buttons
c)Add navigation pane
The image i attached shows this and this i need to accomplish without any dragging of the horizontal splitter or in other words these menuitems should always popup whenever user clicks the dropdown (inverted triangle).
Kindly advise how i can realize this, am currently clueless on how to enable the dropdown menu, populate it with all these items.