High performance “contains” search in list of strings in C#

Question

I have a list of approx. 500,000 strings, each approx. 100 characters long. Given a search term, I want to identify all strings in the list that contain the search term. At

Answer 1

Have you tried the following?

list.FindAll(x => x.Contains("YourTerm")).ToList();

For some reason the List.AsParallel().Where(...) is slower than list.FindAll(...) on my PC.

list.AsParallel().Where(x => x.Contains("YourTerm")).ToList();

Hope this will help you.