c# - Unable to navigate the page in FrayxRulez/SwipeListView control in windows phone 8.1 -

i working windows phone 8.1 c# application . want swpe delete control have used frayxrulez/swipelistview working fine when used swipelistview_itemclick event doesn't navidate page .

private async void swipelistview_itemclick(object sender, itemclickeventargs e) {     var item = e.clickeditem emailobject;     frame.navigate(typeof(testpage));      // await new messagedialog(item.body, "clicked item").showasync(); } 

it caused crashed . please me out .

i've tried , works new xaml blankpage. crashed caused in testpage. check exceptions in debug mode when navigate in testpage, or use breakpoints.