Call Listview KeyDown Event from click event in metro app

Question

I want call keydown(ctrl+f12) event from item click event in list view i.e. suppose there are 5 items in a list view and when i click on any item say 3rd then on clicking 3rd item its key down(ctrl+f12) should be called in which there will be another method to be called.How  can i do this.Please someone help me.
It is in metro app(c# and xaml)