private void LoadDistinctValuesAsync()
{
NorthwindDomainContext context = new NorthwindDomainContext();
EntityQuery<DistinctValue> countriesQuery =
context.GetDistinctValuesQuery("Country");
context.Load<DistinctValue>(countriesQuery
, LoadBehavior.RefreshCurrent
, this.OnDistinctValuesLoaded
, this.countries);
EntityQuery<DistinctValue> citiesQuery =
context.GetDistinctValuesQuery("City");
context.Load<DistinctValue>(citiesQuery
, LoadBehavior.RefreshCurrent
, this.OnDistinctValuesLoaded
, this.cities);
EntityQuery<DistinctValue> contactTitlesQuery =
context.GetDistinctValuesQuery("ContactTitle");
context.Load<DistinctValue>(contactTitlesQuery
, LoadBehavior.RefreshCurrent
, this.OnDistinctValuesLoaded
, this.contactTitles);
}
public CustomersViewModel()
{
NorthwindDomainContext context = new NorthwindDomainContext();
EntityQuery<DistinctValue> contactTitlesQuery = context.GetDistinctValuesQuery("ContactTitle");
context.Load<DistinctValue>(contactTitlesQuery
, LoadBehavior.RefreshCurrent
, this.OnDistinctContactTitlesLoaded
, this.contactTitles);
EntityQuery<Customer> getCustomersQuery = context.GetCustomersQuery();
this.view = new QueryableDomainServiceCollectionView<Customer>(context, getCustomersQuery);
this.view.PageSize = 10;
this.view.AutoLoad = true;
this.view.PropertyChanged += this.OnViewPropertyChanged;
this.view.LoadedData += this.OnViewLoadedData;
this.loadCommand = new DelegateCommand(this.ExecuteLoadCommand, this.LoadCommandCanExecute);
this.countrySortDescriptor = new SortDescriptor() { Member = "Country" };
this.citySortDescriptor = new SortDescriptor() { Member = "City" };
this.contactTitles = new RadObservableCollection<string>();
this.contactTitles.Add(CustomersViewModel.ClearSelectionString);
this.contactTitleFilterDescriptor = new FilterDescriptor("ContactTitle", FilterOperator.IsEqualTo, FilterDescriptor.UnsetValue);
this.view.FilterDescriptors.Add(this.contactTitleFilterDescriptor);
}
