//    public async void OpenSearchOptions()
      //  {
        //    var view = new SearchOptionsView
          //  {
     //           DataContext = this.SearchOptions
       //     };

            //show the dialog
         //   await DialogHost.Show(view, Id);
       // }

        void IScrollReceiver.ScrollChanged(ScrollChangedArgs scrollChangedArgs)
        {
            if (scrollChangedArgs.Direction == ScrollDirection.UP)
                AutoTail = false;
        }
 void IScrollReceiver.ScrollChanged(ScrollChangedArgs scrollChangedArgs)
 {
 }