/// <summary> /// Initializes a new instance of the MainViewModel class. /// </summary> public MainViewModel(IImageService dataService) { _dataService = dataService; ChangeCurrent = new RelayCommand <ImageViewModel>(image => { Current = image; if (Current != null) { _dataService.Comments(image.Model.Id, (items, error) => { if (error != null) { throw error; } Current.Comments = new ObservableCollection <CommentViewModel>( from i in items select new CommentViewModel(i)); }); } }); Search = new RelayCommand(() => { Images = null; _dataService.Search(new ImageSearchQuery() .FilterByTags(TagsFilter).ForUserOnly(OnlyUser), (items, error) => { if (error != null) { throw error; } Images = new ObservableCollection <ImageViewModel>( (from i in items select new ImageViewModel(i)).Skip(Page * PageSize).Take(PageSize) ); IsReady = true; }); IsReady = false; }); if (IsInDesignMode) { Search.Execute(null); } }