Auto-Magical

private void profiles_MouseLeftButtonDown(object sender, System.Windows.Input.MouseButtonEventArgs e)
        {
            ((SomeViewModel)(this.DataContext)).RowTouchedCommandHandled(e); // this just calls the method in the viewmodel - you can call it directly if your aren't using MVVM
        }

/// This is the only view-specific code you need for rendering and paging.  All the paging and databinding is handled by PagedListViewModelBase
/// SelectionChanged handlers can go here or in the base class
 public override void GetDataFromWebService(object obj)
        {
            // Get Data:
            if (!IsLoading)
            {
                IsLoading = true;
                var svc = new ProfileWebService(_userService.Current(), webService);
                svc.GetSearchResults(CurrentPage, OnItemsRetrieved);
            }
        }

protected ObservableCollection _pagedObjectList;
 
// An ObservableCollection object generates NotifyPropertyChanged events to let the UI know when to update
 public ObservableCollection PagedObjectList
        {
            get
            {
                if (_pagedObjectList == null && !IsLoading)
                {
                    if (!IsInDesignMode)
                    {
                        GetDataFromWebService(null);
                    }
                    else
                    {
                        // design mode
                        GenDesignTimeMockProfiles();
 
                        RaisePropertyChanged("PagedObjectList");
                    }
                }
                return _pagedObjectList;
            }
            set
            {
                _pagedObjectList = value;
            }
        }
 
protected int CurrentPage { get; set; }
protected bool IsLoading;
 
        ///  Handles touches from user and decided when to add the next page to the list
       public void RowTouchedCommandHandled(MouseButtonEventArgs obj)
        {
            var personalProfile = ((PagedObject)(((FrameworkElement)obj.OriginalSource).DataContext));
 
            if (personalProfile.GetType() != typeof(PersonalProfile))
                return;
 
            int index = PagedObjectList.IndexOf(personalProfile);
            Debug.WriteLine("Current index: " + index);
            Debug.WriteLine("NumberOfResults: " + personalProfile.NumberOfResults);
 
            if (!IsLoading && personalProfile.NumberOfResults > PagedObjectList.Count && index > PagedObjectList.Count - 6) // if less than six items from the end, get the next page
            {
                CurrentPage += 1;
                Debug.WriteLine("Next page: " + CurrentPage);
                GetDataFromWebService(0);
            }
        }
 
 
public abstract void GetDataFromWebService(object obj);        
 
  protected void OnItemsRetrieved(List pagedObjects, Error error)
        {
            if (error == null)
            {
                if (_pagedObjectList == null)
                {
                    _pagedObjectList = new ObservableCollection();
                }
                pagedObjects.ForEach(p => _pagedObjectList.Add(p));
 
                RaisePropertyChanged("PagedObjectList");
                IsLoading = false;
            }
            else
            {
                Error = error;
            }
        }
    }
 
/// You don't need all these conversions if you use a single type for your lists.            
/// .Net 4.0 adds support for co-variance, which allows casting a generic collection to base type
 protected void OnItemsRetrieved(List profileList, Error error)
        {
            var objList = new List();
            profileList.ForEach(objList.Add);
            OnItemsRetrieved(objList, error);
        }

[DataContract]
    public class PagedObject : ModelBase
    {
        /// <summary>
        /// Total number of results for this search
        /// </summary>
        [DataMember]
        public int NumberOfResults { get; set; }
    }