public ContentItemViewModel()
{
Title = "DevDays Content Items";
ContentItems = new ObservableRangeCollection <Document>();
LoadCommand = new Command(async() => await ExecuteLoadDocumentsCommand());
MessagingCenter.Subscribe <NewContentTypePage, Document>(this, "AddContentItem", async(obj, document) =>
{
var _document = document as Document;
ContentItems.Add(_document);
await DataStore.AddContentItemAsync(_document);
});
}
