Use LINQ where list of items contains any component in a list of components

Question

Using LINQ, how can I find a list of items where it\'s list of components contains a component from another list of components?

Structure:

class Item
{
          


        

Answer 1

It should be the other way around: first the Any and then the Contains. You would like to get all items that have any of there components contained in the components list.

Also don't use the Select if you'd like to get a list of Item back:

var result = items.Where(i => i.Components.Any(c => components.Contains(c.Name)));

Answer 2

It because Any expects boolean value, but you return string: x.Name.ToString.

You can check intersection of two sequences in you case:

items.Where(x => x.Components.Intersect(components).Any())

Intersect will return non-empty sequence, if both item.Components and components contain same elements. Then Any without parameters will return true, if the sequence is non-empty.