timers in listview

[C# Programming]

hey i am working in .net application in c#.........i need to delete differnt items from list view with the help of timer on the selectedindexchange event.....the problem is that when i select one item at a time within the elapsing time of the timer there is no problem, but when i select multiple items at a time within the elapsing time of the timer the timer is set only on the last selected item and it gets removed from the previous one............is there any way to set timer on every selected item of the listview.......i need the code in c#......immediate help will be appreciated.......