c# - LINQ: search 2 properties for a list of strings -

i have following in varies parts of code:

questionmodel:

public class questionmodel {     public string question { get; set; }     public string answer { get; set; } } 

keywords:

list<string> searchkeywords 

questions:

list<questionmodel> questions 

what achieve list of questions, search , retain questions have keywords.

i'm gone far hit road block:

var questions = getallquestions(); //returns questions list<questionmodel> questions = questions.all(x => searchkeywords.all(k => x.question.contains(k) || x.answer.contains(k))); 

this returns bool.

any or directions appreciated.

you using wrong linq method, want where instead of all:

questions = questions.where(x => ...); 

all tells if every item in collection satisfies condition (boolean result); where filters elements satisfy condition (filtered collection result).

depending on questions (looks property, of type?) may have wrap tolist or toarray.