LINQ Intersect Method

In LINQ, the Intersect method or operator is used to return the common elements from both the collections.

Here is the pictorial representation of the LINQ intersect method.

LINQ Intersect method will combine both the collections into a single collection and return only the matching element from the collection.

Syntax of LINQ Intersect Method

The syntax of using the intersect method to get the matching elements from the multiple collections.

From the above syntax, we are combining the two collections to get the result as a single collection using the intersect method.

Example of LINQ Intersect Method

Here is the example of the LINQ Intersect Method.

using System;
using System. Collections;
using System.Collections.Generic;
using System. Linq;
using System. Text;
using System.Threading.Tasks;

namespace ConsoleApp1
{
    class Programme2
    {
        static void Main(string[] args)
        {
//declare the two array variable count1 and count2 of the type string 
            string[] count1 = { "India", "Australia", "UK", "USA" };
            string[] count2 = { "India", "China", "UK", "China" };
/*apply the Intersect method on both of the array
 count1 and count2 and store the output in result variable*/
            var result = count1.Intersect(count2);
/*foreach loop will iterate over all the element of 
the variable item which store the output of the result variable*/ 
            foreach (var item in result)
            {
/*Console.WriteLine(item) print 
all element store in the item variable.*/
                Console.WriteLine(item);
            }
                Console.ReadLine();
        }
    }
}

Output: