delete multiple items using ListView

Hi Guys,

I am looking for small example demo for deleting multiple rows in the listview using Xamarin Forms.I know how to develop the simple listview like below

ListView listview=new Listview();

llistview.ItemSource=new String[]{
"Elephant",
"Dolphin",
"Lion"

}

Content=new stacklayout(){

children={
listview

}
};

But I am not able to delete multiple items like if I want to delete "Elephant" and "Lion" what need to writted in the code using Xamarin Forms(Cross Platform)not in Android or Nor in** Windows phone**