c# - How do I convert a ListView SelectedItem into an IObservable? -

this may remedial question, research spinning me in circles right (especially java developer) , looking @ several different rx wrapper libraries. want take listview<musicnote>.selecteditem , wrap iobservable, emitting stream of current single selected value. easiest means this? should use reactiveproperty, rx-xaml, or library? or there easy built-in way rx.net? prefer not use traditional event method stub vs generates. although push values in that, feels messy , not paradigm want.

this.keyselector.selecteditem // turn listview's selecteditem iobservable

one way of doing in rx.net following:

var whenselectionchange = observable.fromeventpattern(h => listview.selectedindexchanged += h,                                                        h => listview.selectedindexchanged -= h)                                     .select(_ => listview.selecteditem); 

basically, fromeventpattern() generates observable sequence selectedindexchanged events triggered listview. select() called each time event triggered, can selected index list , return it. whenselectionchange iobservable<int> each added element new selected index.

i have never used it, can take @ http://reactiveui.net/ it's mvvm framework seems integrate rx.net , supported on mobile platforms.