protected override void OnDisappearing()
 {
     base.OnDisappearing();
     ListView.ItemSelected -= LoginSelected;
     AddLoginItem.Dispose();
     SearchItem.Dispose();
 }
 protected override void OnDisappearing()
 {
     base.OnDisappearing();
     ListView.ItemSelected      -= LoginSelected;
     Search.TextChanged         -= SearchBar_TextChanged;
     Search.SearchButtonPressed -= SearchBar_SearchButtonPressed;
     AddLoginItem?.Dispose();
 }