C# List Index

1. Use the ElementAt() Method to Get List Items by Index in C#
2. Use the List<T>.Item[Int32] Property to Get List Items by Index in C#

The List<T> are dynamic array or C++ vector equivalent of C#. It is defined in the System.Collections.Generic namespace.

It is used to store collections of different types of data, which can then be easily accessed, modified, added, deleted, or sorted. In this tutorial, we will look at how to get list items by index in C#.

Use the ElementAt() Method to Get List Items by Index in C#

using System;
using System.Linq;
using System.Collections.Generic;
public class Test {
  public static void Main() {
    var myList = new List<int> { 9, 3, 11, 23, 43 };
    var firstItem = myList.ElementAt(0);
    Console.WriteLine(firstItem);
  }
}

Output:

9

The ElementAt() method takes the index as an argument and returns the value present at that index inside the list. In the above example, we have shown a sample use case.

Use the List<T>.Item[Int32] Property to Get List Items by Index in C#

using System;
using System.Linq;
using System.Collections.Generic;
public class Test {
  public static void Main() {
    var myList = new List<int> { 9, 3, 11, 23, 43 };
    var firstItem = myList[0];
    Console.WriteLine(firstItem);
  }
}

Output:

9

The above example is pretty self-explanatory, where we access the first element of the list myList using the List<T>.Item[Int32] property. We can get any index by changing the argument provided from 0 to an index within the range of array size.