public async override void OnNavigatedTo(NavigatedToEventArgs e, Dictionary <string, object> viewModelState)
{
string errorMessage = string.Empty;
ICollection <Category> rootCategories = null;
try
{
LoadingData = true;
rootCategories = await _productCatalogRepository.GetRootCategoriesAsync(5);
}
catch (Exception ex)
{
errorMessage = string.Format(CultureInfo.CurrentCulture,
_resourceLoader.GetString("GeneralServiceErrorMessage"),
Environment.NewLine,
ex.Message);
}
finally
{
LoadingData = false;
}
if (!string.IsNullOrWhiteSpace(errorMessage))
{
await _alertMessageService.ShowAsync(errorMessage, _resourceLoader.GetString("ErrorServiceUnreachable"));
return;
}
var rootCategoryViewModels = new List <CategoryViewModel>();
foreach (var rootCategory in rootCategories)
{
rootCategoryViewModels.Add(new CategoryViewModel(rootCategory, _navigationService));
}
RootCategories = new ReadOnlyCollection <CategoryViewModel>(rootCategoryViewModels);
}
