MDI or some alternative in wpf

Am working on desktop based application in wpf in that i need MDI that all window will open on main dashboard. but till now how much i can search according to that there is no MDI like option in wpf bt i need that to implement in my project so if any one please help me to find some replacement as i can do that.. I also search with usercontrol this can be done but on that there is some problem like unable to work on the button events. so please suggest me something.