Static Constructor and C# implementation

Static Constructor

  • Instance constructors are used to initialize an object
  • Static constructors are used to initialize a class
  • Will only ever be executed once
  • Run before the first object of that type is created.
  • Have no parameter
  • Do not take an access modifier
  • May co-exist with a class constructor

Syntax:

        class Lion
        {
            static Lion()
            {
                // class-specific initialization
            }
        }

Example:


class RandomNumberGenerator
{
private static Random randomNumber;
public static string AuthorName { get; set; }

public RandomNumberGenerator(String msg)
{
Console.WriteLine(msg);
//Constructor for object
}

//Static constructor
static RandomNumberGenerator()
{
AuthorName = “Mahedee Hasan”;
randomNumber = new Random();
}

public int Next()
{
return randomNumber.Next();
}
}

class Program
{
static void Main(string[] args)
{
RandomNumberGenerator randomNumber
= new RandomNumberGenerator(“Generate 10 Random Number”);

for (int i = 0; i < 10; i++) { Console.WriteLine(randomNumber.Next()); } Console.WriteLine(“Author Name: ” + RandomNumberGenerator.AuthorName); Console.ReadKey(); } } [/csharp]

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