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C# List<T>.Add() Method with Example

C# List<T>.Add() Method: In this tutorial, we will learn about the Add() method of List collection with its usage, syntax, and an example using C# program. By IncludeHelp Last updated : April 15, 2023

C# List<T>.Add() Method

List<T>.Add() method is used to add the object/element at the end of the list.

Syntax

void List<T>.Add(T item);

Parameter(s)

It accepts single an item of T type to add in the List.

Return Value

It returns nothing – it's return type is void

Example

int list declaration:
List<int> a = new List<int>();

Adding elements:
a.Add(10);
a.Add(20);
a.Add(30);
a.Add(40);
a.Add(50);

Output:
10 20 30 40 50

C# program to add items to the list using List<T>.Add() method

using System;
using System.Text;
using System.Collections.Generic;

namespace Test {
  class Program {
    static void Main(string[] args) {
      //integer list
      List <int> a = new List <int> ();

      //adding elements
      a.Add(10);
      a.Add(20);
      a.Add(30);
      a.Add(40);
      a.Add(50);

      //printing elements
      Console.WriteLine("list elements are...");
      foreach(int item in a) {
        Console.Write(item + " ");
      }
      Console.WriteLine();

      //string list
      List < string > b = new List < string > ();

      //adding elements
      b.Add("Manju");
      b.Add("Amit");
      b.Add("Abhi");
      b.Add("Radib");
      b.Add("Prem");

      //printing elements
      Console.WriteLine("list elements are...");
      foreach(string item in b) {
        Console.Write(item + " ");
      }
      Console.WriteLine();

      //hit ENTER to exit
      Console.ReadLine();
    }
  }
}

Output

list elements are...
10 20 30 40 50
list elements are...
Manju Amit Abhi Radib Prem

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