public async override void OnNavigatedTo(NavigatedToEventArgs e, Dictionary <string, object> viewModelState)
{
base.OnNavigatedTo(e, viewModelState);
int parentCategoryId = int.Parse(e.Parameter.ToString());
ICollection <Category> subCategories = null;
string errorMessage = string.Empty;
try
{
subCategories = await _productCatalogRepository.GetSubcategoriesAsync(parentCategoryId, 5);
}
catch (Exception ex)
{
errorMessage = string.Format(CultureInfo.CurrentCulture, _resourceLoader.GetString("GeneralServiceErrorMessage"), Environment.NewLine, ex.Message);
}
if (!string.IsNullOrWhiteSpace(errorMessage))
{
await _alertMessageService.ShowAsync(errorMessage, _resourceLoader.GetString("ErrorServiceUnreachable"));
return;
}
if (string.IsNullOrEmpty(Title))
{
Title = _productCatalogRepository.GetCategoryName(parentCategoryId);
}
var subCategoryViewModels = new List <CategoryViewModel>();
foreach (var subCategory in subCategories)
{
subCategoryViewModels.Add(new CategoryViewModel(subCategory, _navigationService));
}
Subcategories = new ReadOnlyCollection <CategoryViewModel>(subCategoryViewModels);
}
