使用c#中的lambda获取嵌套列表中的特定元素

Question

好日子,

假设我有一个静态List<AClass>对象(让我们将其命名为myStaticList),其中包含其他列表,该列表包含具有CId和Name属性的其他列表.

我需要做的是

foreach(AClass a in myStaticList)
{
   foreach(BClass b in a.bList)
   {
      foreach(CClass c in b.cList)
      {
        if(c.CId == 12345)
        {
           c.Name = "Specific element in static list is now changed.";
        }
      }
   }
}

我可以使用LINQ Lambda表达式实现此目的吗？

就像是;

myStaticList
.Where(a=>a.bList
.Where(b=>b.cList
.Where(c=>c.CId == 12345) != null) != null)
.something logical
.Name = "Specific element in static list is now changed.";

请注意,我想更改静态列表中该特定项的属性.

Answer 1

您需要SelectMany展平您的列表:

var result = myStaticList.SelectMany(a=>a.bList)
                         .SelectMany(b => b.cList)
                         .FirstOrDefault(c => c.CId == 12345);

if(result != null)
    result.Name = "Specific element in static list is now changed.";;