从嵌套列表C＃LINQ的最后一级删除元素

Question

I have an entity with multiple levels of nested lists - Is there a way to remove element from last level using LINQ (without any nested foreach) - remove Dosage with id = X from strength with id = Y from route with id = Z from drug with id = Q? (assume XYZQ are ints) I've provided my entity structure below.

var entity: List<Drug>;
Drug {
    int id;
    List<Route> routes;
}

Route {
    int id;
    List<Strength> strengths;
}

Strength {
    int id;
    List<Dosage> dosages;
}

Dosage {
    int id;
}

Answer 1

Try this:

drugList.Where(x => x.id == Q).FirstOrDefault().routes.Where(x => x.id == Z).FirstOrDefault().strengths.Where(x => x.id == Y).FirstOrDefault().dosages.RemoveAt(X);

With the Q,Z,Y,X as the index values from your post.