private async void CategoryList_ItemClick(object sender, ItemClickEventArgs e)
{
Category c = e.ClickedItem as Category;
CategorySelected = c.Id;
this.ProgressRingCtrl.IsActive = true;
this.SplitViewRPanel.Opacity = 0;
try
{
products = productTable
.Where(product => product.CategoryName == c.CategoryName)
.ToIncrementalLoadingCollection();
ProductListingGridView.ItemsSource = products;
categories = await categoryTable
.Where(category => category.Id == CategorySelected)
.ToCollectionAsync();
this.ProgressRingCtrl.IsActive = false;
this.SplitViewRPanel.Opacity = 1;
CategoryList.ItemsSource = categories;
}
catch (Exception ex)
{
this.ProgressRingCtrl.IsActive = false;
this.SplitViewRPanel.Opacity = 1;
await new MessageDialog(ex.Message, "Error loading items").ShowAsync();
return;
}
ClearSelectionFilter.Visibility = Visibility.Visible;
ClearSelectionFilter.Foreground = new SolidColorBrush(Windows.UI.Colors.CornflowerBlue);
SetDataTemplateFilter();
if (AdaptiveStates.CurrentState == NarrowStateView2)
{
if (Window.Current.Bounds.Width >= 450)
{
VisualStateManager.GoToState(this, "MediumState", false);
}
else
{
VisualStateManager.GoToState(this, "NarrowState", false);
}
}
}
private async Task RefreshData()
{
this.ProgressRingCtrl.IsActive = true;
this.SplitViewRPanel.Opacity = 0;
ClearSelectionFilter.Visibility = Visibility.Collapsed;
ClearSelectionFilter.Foreground = new SolidColorBrush(Windows.UI.Colors.Black);
MobileServiceInvalidOperationException exception = null;
string ExceptionDetail = string.Empty;
try
{
// This code refreshes the entries in the list view by querying the TodoItems table.
// The query excludes completed TodoItems
products = productTable
.Where(product => product.Id != null)
.ToIncrementalLoadingCollection();
categories = await categoryTable
.Where(category => category.Id != null)
.ToCollectionAsync();
this.ProgressRingCtrl.IsActive = false;
this.SplitViewRPanel.Opacity = 1;
CategoryList.ItemsSource = categories;
ProductListingGridView.ItemsSource = products;
}
catch (MobileServiceInvalidOperationException e)
{
ExceptionDetail = e.Message;
}
catch (Exception e)
{
ExceptionDetail = e.Message;
}
if (!(string.IsNullOrEmpty(ExceptionDetail)))
{
this.ProgressRingCtrl.IsActive = false;
this.SplitViewRPanel.Opacity = 1;
await new MessageDialog(ExceptionDetail, "Error loading items").ShowAsync();
}
}
public async Task MobileServiceCollectionLoadMoreItemsAsyncExceptionsNotHandledByDefault()
{
// Get the Books table
MobileServiceTableQueryMock <Book> query = new MobileServiceTableQueryMock <Book>();
query.EnumerableAsyncThrowsException = true;
MobileServiceIncrementalLoadingCollection <Book, Book> collection = new MobileServiceIncrementalLoadingCollection <Book, Book>(query);
Exception ex = null;
try
{
await((ISupportIncrementalLoading)collection).LoadMoreItemsAsync(10);
}
catch (Exception e)
{
ex = e;
}
Assert.IsNotNull(ex);
}
public async Task MobileServiceCollectionLoadMoreItemsAsyncExceptionsCanBeHandled()
{
// Get the Books table
MobileServiceTableQueryMock<Book> query = new MobileServiceTableQueryMock<Book>();
query.EnumerableAsyncThrowsException = true;
MobileServiceIncrementalLoadingCollection<Book, Book> collection = new MobileServiceIncrementalLoadingCollection<Book, Book>(query);
CancellationTokenSource tokenSource = new CancellationTokenSource();
Exception ex = null;
try
{
await ((ISupportIncrementalLoading)collection).LoadMoreItemsAsync(10);
}
catch (Exception e)
{
ex = e;
}
Assert.IsNotNull(ex);
}
