public void LoadNexPage()
        {
            if ((currentPage + 1) < pages.Last())
            {
                currentPage += 1;
                var PreViewAwaiter = WallBoxApi.GetCategoryPageData(((WallBox.DataModel.CategoryModel)CategoriesListBox.SelectedItem).Url, currentPage).GetAwaiter();
                PreViewAwaiter.OnCompleted(() =>
                {
                    var data = PreViewAwaiter.GetResult();
                    pages    = data.Item2;

                    foreach (var previewModel in data.Item1)
                    {
                        imageModels.Add(previewModel);
                    }

                    if (AllCheckbox.IsChecked == true)
                    {
                        PreviewListView.SelectAll();
                    }

                    Loading = false;
                });
            }
        }
        public void LoadCategories()
        {
            var TaskAwaiter = WallBoxApi.GetCategoriesAsync().GetAwaiter();

            TaskAwaiter.OnCompleted(() =>
            {
                var data = TaskAwaiter.GetResult();
                foreach (WallBox.DataModel.CategoryModel categoryModel in data)
                {
                    CategoriesListBox.Items.Add(categoryModel);
                }
            });
        }
        private async Task sAsync(string folder, WallBox.DataModel.ImageModel imageobject)
        {
            try
            {
                var ImageUrl = await WallBoxApi.GetImageUrlAsync(imageobject);

                Debug.WriteLine(ImageUrl);
                var sp = ImageUrl.Split('/');

                new WebClient().DownloadFile(ImageUrl, folder + "\\" + sp[sp.Length - 2] + sp[sp.Length - 1]);
            }
            catch (Exception ex)
            {
                Debug.WriteLine(ex.Message);
            }

            await this.Dispatcher.BeginInvoke(System.Windows.Threading.DispatcherPriority.Background, new Action(() =>
            {
                DownloadProgressBar.Value++;
                DownloadProgressTextBlock.Text = "Загруженно " + DownloadProgressBar.Value + " из " + DownloadProgressBar.Maximum;
            }));

            await Dispatcher.BeginInvoke(System.Windows.Threading.DispatcherPriority.Background, new Action(() =>
            {
                if (DownloadProgressBar.Value == DownloadProgressBar.Maximum)
                {
                    GC.Collect(0, GCCollectionMode.Optimized);
                    GC.Collect(1, GCCollectionMode.Optimized);
                    GC.Collect(2, GCCollectionMode.Optimized);
                    GC.Collect(3, GCCollectionMode.Optimized);

                    DownloadProgressTextBlock.Text = "Загрузка завершена";
                    FinishExitButton.Visibility = Visibility.Visible;
                }
            }));
        }