LINQ 表达式 select 基于可见性 asp.net

Question

所以我有一个包含 post 个对象的列表，这些对象具有 visibility 枚举 属性。我正在尝试获取所有包含 visibility == visibility.public 和 visibility == visibility.private && AuthorId == currentUserId.

的帖子

这似乎不起作用：from e in list select (e.Visibility == Visibility.Public && (e.Visibility == Visibility.Private && e.Author.Id == userId))

如有任何帮助，我们将不胜感激

Answer 1

您要求 post 同时具有可见性 public 和私有。你的两个条件应该使用 OR 而不是 AND。

你的条件应该是e.Visibility == Visibility.Public || (e.Visibility == Visibility.Private && e.Author.Id == userId)

注意 ||

Answer 2

试试这个

var filteredList = list.Where(x => x.Visibility == Visibility.Public || (x.Visibility == Visibility.Private && x.AuthorId == currentUserId)).ToList();