C# Academy · Lesson

Object and Collection Initializers

Set properties at creation time concisely.

What Is an Object Initializer?

An object initializer sets public properties or fields right after new, inside { }, without writing a constructor for each combination.

using System;

class Person
{
    public string Name { get; set; }
    public int Age { get; set; }
}

class Program
{
    static void Main()
    {
        var p = new Person { Name = "Ada", Age = 36 };
        Console.WriteLine(p.Name + ", " + p.Age);
    }
}

Initializer Syntax

List property assignments separated by commas inside the braces. They run after the constructor completes.

using System;

class Car
{
    public string Make { get; set; }
    public string Model { get; set; }
    public int Year { get; set; }
}

class Program
{
    static void Main()
    {
        var car = new Car
        {
            Make = "Toyota",
            Model = "Corolla",
            Year = 2022
        };
        Console.WriteLine(car.Year + " " + car.Make + " " + car.Model);
    }
}

All lessons in this course

← Back to C# Academy