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C# - Static Constructor Example

In this example, we will learn how to create static constructor using C# program?
Submitted by Nidhi, on November 08, 2020 [Last updated : March 22, 2023]

Here, we will create a class with the static and non-static constructor. The static constructor is called before the first object of the class gets created.

C# program to demonstrate the example of static constructor

The source code to demonstrate the static constructor is given below. The given program is compiled and executed successfully on Microsoft Visual Studio.

//C# - Static Constructor Example

using System;

public class StaticDemo
{
    static StaticDemo()
    {
        Console.WriteLine("Static constructor called");
    }

    public StaticDemo()
    {
        Console.WriteLine("Non-Static constructor called");
    }
}

class Test
{
    static void Main(string[] args)
    {
        Console.WriteLine("Main() method called");

        StaticDemo S1 = new StaticDemo();
        StaticDemo S2 = new StaticDemo();
    }
}

Output

Main() method called
Static constructor called
Non-Static constructor called
Non-Static constructor called
Press any key to continue . . .

Explanation

In the above program, we created two classes StaticDemo and Test. The StaicDemo class contains a static and non-static constructor. The static constructor is always called before the first object of the class gets created.

Now look to the Test class that contains the Main() method. The Main() method is the entry point for the program. Here, we printed a message "Main() method called" on the console screen. Then we created the two objects then a static construct gets called after then non-static constructor called for both objects.

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