public override bool OnCreateOptionsMenu(IMenu menu)
{
this.MenuInflater.Inflate(Resource.Menu.menu_search, menu);
var searchItem = menu.FindItem(Resource.Id.action_search);
var test = MenuItemCompat.GetActionView(searchItem);
searchView = test.JavaCast<Android.Support.V7.Widget.SearchView>();
searchView.QueryTextSubmit += (sender, args) =>
{
Toast.MakeText(this, "You searched: " + args.Query, ToastLength.Short).Show();
};
return base.OnCreateOptionsMenu(menu);
}