public DataResultSyndicationItems GetByCategory(DataFilterSyndication filter)
{
SyndicationFeedFormatter feed = this.GetAll();
SyndicationCategoryComparer categoryComparer = new SyndicationCategoryComparer();
SyndicationCategory categoryToFind = new SyndicationCategory(filter.CategoryName);
List<SyndicationItem> items = feed.Feed.Items
.Where(p => p.Categories.Contains(categoryToFind, categoryComparer))
.ToList();
return this.GetDataResult(items, filter);
}
/// <summary>
/// Selects all categories inside SyndicationItems and push them into an array
/// </summary>
/// <param name="feedFormatter"></param>
/// <returns></returns>
public static SyndicationCategory[] CategoriesGetFromItems(this SyndicationFeedFormatter feedFormatter)
{
SyndicationCategoryComparer categoryComparer = new SyndicationCategoryComparer();
SyndicationCategory[] categories = feedFormatter.Feed.Items
.Select(p => { return p.Categories; })
.SelectMany(p => p)
.Distinct(categoryComparer)
.ToArray();
return categories;
}
