Constructors in C# - NET Programmer

Constructors in C# are methods invoked during initialization of an object.

They're used to initialize the properties within the object.

using System;

public class Book
{
    public string Title { get; set; }
    
    public Book(string title)
    {
        Title = title;
    }
}

Here we have a class Book containing one property called Title.

It also contains definition of the constructor initializing the Title property with the value passed as a a parameter.

The name of the constructor is always the same as the name of the class.

public class Program
{
    public static void Main()
    {
        var book = new Book("Harry Potter");
        Console.WriteLine(book.Title);
    }
}

We can use the Main method to initialize new variable called book with the Book class constructor and display the Title property using Console.WriteLine.

Static constructors are a little bit more advanced.


public class Program
{
    public static string Material { get; set; }

    static Book()
    {
        Material = "Paper;
    }
}

Static constructors are used to initialize static properties.

The static properties can be accessed without initialization of the object.

public class Program
{
    public static void Main()
    {
        Console.WriteLine(Book.Material);
    }
}