public void Initialize(int itemCountPerPage) { SelectedFileName = null; paging.ItemCountPerPage = itemCountPerPage; fileNames = preview.Workspace.StorageBlockService.GetBlockNames(); paging.ItemCount = fileNames.Count; while (viewerViewModels.Count < itemCountPerPage) { var viewerViewModel = new ViewerViewModel(preview.CreateViewer()); viewerViewModels.Add(viewerViewModel); } InitializeViewerViewModels(); }