[英]Select property of an object that is in a list of objects which is also in another list of objects
我有下一個arhitecture:
public class Element
{
public uint Id { get; set; }
public ICollection<ElementDetails> elementDetails { get; set; }
}
public class ElementDetails
{
public string ElementTitle { get; set; }
public string Content { get; set; }
}
並且List<Element> someList
包含數百個元素。 我正在嘗試獲取包含某個文本的ElementTitle(字符串)列表(我稱之為“種子”)。 我想要實現它是一種先行者。 這是我的嘗試:
List<Element> suggestedElements = someList.Where(s => s.elementDetails.Any(ss => ss.ElementTitle.Contains(seed))).ToList();
List<string> suggestions = suggestedElements .SelectMany(t => t.elementDetails.Select(x => x.ElementTitle)).ToList() }); // contains all ElementTitle, including those ElementTitle that don't contain the "seed"...
我怎樣才能擺脫那些不含種子的元素?
List<string> suggestions = someList.SelectMany(x => x.elementDetails)
.Where(y => y.ElementTitle.Contains(seed))
.Select(z => z.ElementTitle)
.ToList();
更簡單:
List<string> suggestions = someList.SelectMany(x => x.elementDetails)
.Select(y => y.ElementTitle);
.Where(z => z.Contains(seed))
.ToList();
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