Go Back   TechArena Community > Software > Software Development
Become a Member!
Forgot your username/password?
Register Tags Active Topics RSS Search Mark Forums Read

Sponsored Links



Static Constructors in C# (C sharp )

Software Development


Reply
 
Thread Tools Search this Thread
  #1  
Old 02-03-2009
Member
 
Join Date: Jan 2009
Posts: 16
Static Constructors in C# (C sharp )
  

Hello friends

currently i am searching info about c#. I want some info about static constructor in C# can some one know about this plz provide me information.

Thanks

Reply With Quote
  #2  
Old 02-03-2009
Member
 
Join Date: Jan 2009
Posts: 23
Re: Static Constructors in C# (C sharp )

Whenever a class or struct is created, its constructor is called. A class or struct may have multiple constructors that take different arguments. Constructors allow the programmer to set default values, limit instantiation, and write code that is flexible and easy to read.

If you do not provide a constructor for your object, C# will create one by default that instantiates the object and sets any member variables to the default values listed here: Default Values Table (C# Reference). Static classes and structs can also have constructors.

A static constructor is used to initialize any static data, or to perform a particular action that needs performed once only. It is called automatically before the first instance is created or any static members are referenced.

Code:
class SimpleClass
{
    // Static constructor
    static SimpleClass()
    {
        //...
    }
}
Static constructors have the following properties:
  • A static constructor does not take access modifiers or have parameters.
  • A static constructor is called automatically to initialize the class before the first instance is created or any static members are referenced.
  • A static constructor cannot be called directly.
  • The user has no control on when the static constructor is executed in the program.
  • A typical use of static constructors is when the class is using a log file and the constructor is used to write entries to this file.
  • Static constructors are also useful when creating wrapper classes for unmanaged code, when the constructor can call the LoadLibrary method.

Example

In this example, the class Bus has a static constructor and one static member, Drive(). When Drive() is called, the static constructor is invoked to initialize the class.

Code:
public class Bus
{
    // Static constructor:
    static Bus()
    {
        System.Console.WriteLine("The static constructor invoked.");
    }

    public static void Drive()
    {
        System.Console.WriteLine("The Drive method invoked.");
    }
}

class TestBus
{
    static void Main()
    {
        Bus.Drive();
    }
}
Reply With Quote
Reply

  TechArena Community > Software > Software Development
Tags: , ,



Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads for: "Static Constructors in C# (C sharp )"
Thread Thread Starter Forum Replies Last Post
Sharp 007SH Hybrid An 3D Clamshell Android Phone by Sharp jackalz Web News & Trends 3 22-05-2011 08:28 AM
what are constructors in C++? Asis Software Development 4 29-12-2010 08:38 AM
Constructors and Destructors in PHP garfield1 Software Development 4 02-03-2010 11:01 PM
Make a static reference to the non-static field Aaliya Seth Software Development 5 02-03-2010 11:11 AM
What are the Constructors and Destructors? RupaliP Software Development 4 27-02-2009 07:03 PM


All times are GMT +5.5. The time now is 04:47 AM.