Element Operator-ElementAt

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Element Operator-ElementAt

The ElementAt operator returns the element at a given index in a sequence.

This sample prints the fourth number less that 5 in an integer array. The sample first uses a query expression then uses ElementAt to retrieve the fourth number from this sequence. Since ElementAt uses 0-based indexing, 3 is passed to the method to retrieve the fourth element.

Example:

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

namespace ConsoleApplication4

{

class Program

{

    static void Main(string[] args)

    {

     int[] numbers = { 5, 4, 1, 3, 9, 8, 6, 7, 2, 0 };

     int fourthLowNum = (from n in numbers

     where n < 5

      select n).ElementAt(3); // 3 because sequences use 0-based indexing

Console.WriteLine("Fourth number < 5: {0}", fourthLowNum);

Console.ReadLine();

}

}

}

Output: