Search

It's used like this:

var cards = trello.Cards.Search("something");

It is similar for Boards, Organizations, Members and Actions. And there's also a method trello.Search which searches in all those models.

Searching for cards in a list

It does not seem possible to search for cards in a specific list, but it is possible to search in specific boards. I don't know if that helps, but here's a way to do it with Trello.NET:

	var listToSearch = trello.Lists.WithId(listId);
	var searchFilter = new SearchFilter { Boards = new[] { 
            new BoardId(listToSearch.IdBoard) } };
	var cards = trello.Cards.Search(searchText, filter: searchFilter);
	return cards.Where(c => c.IdList == listToSearch.Id);