c# - Implementing LoadMore pagination for a grouped ListView in Windows Phone 8.1? -

is possible apply listviewbase.loadmoreitemsasync method pagination in grouped listview (collectionviewsource). or maybe know way, please let me know.

you can this: on listview add "loaded" event code:

 private void lvpictures_onloaded(object sender, routedeventargs e)  {      scrollviewer viewer = getscrollviewer(this.lvpictures);      viewer.viewchanged += lvpictures_viewchanged;  }   public static scrollviewer getscrollviewer(dependencyobject depobj)       {           if (depobj scrollviewer) return depobj scrollviewer;            (int = 0; < visualtreehelper.getchildrencount(depobj); i++)           {               var child = visualtreehelper.getchild(depobj, i);                var result = getscrollviewer(child);               if (result != null) return result;           }           return null;       } 

and in viewchangeevent can specify when want load more items , this:

     private async void lvpictures_viewchanged(object sender, scrollviewerviewchangedeventargs e)       {           scrollviewer view = (scrollviewer)sender;           double progress = view.verticaloffset / view.scrollableheight;           if (progress > 0.8 & !_incallfileslist && nextpagepicturesavailable)           {               _incallfileslist = true;               getnextpicturespageasync();           }           _incallfileslist = false;       }