下载codeplex上的winrttrigger开源控件
Winrt.Tirgger.EventTrigger trigger = new Winrt.Tirgger.EventTrigger();
trigger.HookEvent("ItemClick", gridView);
MainViewModel model = ServiceLocator.Current.GetInstance<MainViewModel>();
trigger.TriggerActions.Add(new Tirgger.TriggerAction() { Command = model.ItemClick, PassEventArgsToCommand = true });