Find Common Values from Two or More Lists in C#

Create more than one list −

// two lists
var list1 = new List<int>{3, 4};
var list2 = new List<int>{1, 2, 3};

Now, use the Intersect() method to get the common values −

var res = list1.Intersect(list2);

The following is the complete code −

Example

 Live Demo

using System.Collections.Generic;
using System.Linq;
using System;

public class Demo {
   public static void Main() {

      // two lists
      var list1 = new List<int>{3, 4};
      var list2 = new List<int>{1, 2, 3};

      // common values
      var res = list1.Intersect(list2);

      foreach(int i in res) {
         Console.WriteLine(i);
      }
   }
}

Output

3