Find the intersection of two lists in linq?

Question

I have list of int A,B. i like to do the following step in linq

list<int> c = new List<int>();  for (int i = 0; i < a.count; i++) {     for (int j = 0; j < b.count; j++)     {         if (a[i] == b[j])         {             c.add(a[i]);         }     } } 

if its a and b is object , I need check particular properties like this manner and add list if it equals how can i do this in linq?

Answer 1

You could use the Intersect method:

var c = a.Intersect(b); 

This return all values both in a and b. However, position of the item in the list isn't taken into account.

Answer 2

You can use Intersect:

var a = new List<int>(); var b = new List<int>();  var c = a.Intersect(b);