public async override void OnNavigatedTo(NavigatedToEventArgs e, Dictionary <string, object> viewModelState)
{
base.OnNavigatedTo(e, viewModelState);
var queryText = e.Parameter as String;
string errorMessage = string.Empty;
this.SearchTerm = queryText;
this.QueryText = '\u201c' + queryText + '\u201d';
try
{
Collection <Product> products;
if (queryText == PreviousSearchTerm)
{
products = PreviousResults;
}
else
{
var searchResults = await _productCatalogRepository.GetFilteredProductsAsync(queryText, 0);
products = searchResults.Products;
TotalCount = searchResults.TotalCount;
PreviousResults = products;
}
var productViewModels = new List <ProductViewModel>();
foreach (var product in products)
{
productViewModels.Add(new ProductViewModel(product));
}
// Communicate results through the view model
this.Results = new ReadOnlyCollection <ProductViewModel>(productViewModels);
this.NoResults = !this.Results.Any();
// Update VM status
PreviousSearchTerm = SearchTerm;
}
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"));
}
}
