How to use Linq to check if a list of strings contains any string in a list

Question

I\'m constructing a linq query that will check is a string in the DB contains any of the strings in a list of strings.

Something like.

query = query.Whe         


        

Answer 1

I am not quite sure from your question if x.tags is a string or list, if it is a list Jon Skeet's answer is correct. If I understand you correctly though x.tags is a string of strings. If so then the solution is:

list.Any(x => x.tags.IndexOf(x) > -1)

to count them do

list.Count(x => x.tags.IndexOf(x) > -1)