LINQ, can't join to string

Question

I have a list of users, each user has list of questions. In my model list of questions should be in string via comma. I try:

public List

        

Answer 1

Try using the Aggregate method.

Question4 = (from a in _dbContext.MultipleQuestions where a.MultipleQuestionType.KEY == MultipleQuestionKeys.BENEFITS select a.Question).ToArray().Aggregate((x,y) => x + "," + y)

Have not tested