private async Task LoadViewModel()
{
if (viewModelList == null || RefreshedNext < DateTime.Now)
{
RefreshedNext = DateTime.Now.AddMinutes(40);
var categories = await CategoriesData.GetCategoriesAsync();
CategoryViewModel cvm;
foreach (var item in categories)
{
if (!string.IsNullOrEmpty(item.LatestDealId))
{
cvm = new CategoryViewModel();
cvm.CategoryName = item.Name;
cvm.LatestDealId = item.LatestDealId;
cvm.CategoryId = item.CategoryId;
viewModelList.Add(cvm);
}
}
itemsViewSource.Source = viewModelList;
foreach (var item in viewModelList)
{
item.DealCountInCategory = await DealData.GetDealCount(item.CategoryId);
var image = await DealImageData.GetDealImageAsync(item.LatestDealId, "250x250");
item.LatestImageUrl = image.ImageUrl;
}
}
}
private async Task LoadCategories()
{
if (!countryCache.Keys.Contains(CountryIdParam) || RefreshedNext < DateTime.Now)
{
RefreshedNext = DateTime.Now.AddMinutes(40);
var categories = await CategoriesData.GetCategoriesAsync();
viewModelList = new List <CategoryViewModel>();
CategoryViewModel cvm;
foreach (var item in categories)
{
if (!string.IsNullOrEmpty(item.LatestDealId))
{
cvm = new CategoryViewModel();
cvm.CategoryName = item.Name;
cvm.LatestDealId = item.LatestDealId;
cvm.CategoryId = item.CategoryId;
viewModelList.Add(cvm);
}
}
countryCache.Add(CountryIdParam, viewModelList);
var source = countryCache.Where(e => e.Key == CountryIdParam).Select(e => e.Value).Single();
categoryGridView.ItemsSource = source;
foreach (var item in source)
{
item.DealCountInCategory = await DealData.GetDealCount(CountryIdParam, item.CategoryId);
var image = await DealImageData.GetDealImageAsync(item.LatestDealId, "250x250");
item.LatestImageUrl = image.ImageUrl;
}
}
else
{
var source = countryCache.Where(e => e.Key == CountryIdParam).Select(e => e.Value).Single();
categoryGridView.ItemsSource = source;
}
}