C # programming guide static Constructor (C # programming guide)

A static constructor is used to initialize any static data or perform a specific operation that only needs to be performed once. The static constructor is automatically called before the first instance is created or any static member is referenced.

Class Simpleclass
{
// Static Constructor
Static Simpleclass ()
{
//
}
}

 

Static constructors have the following features:

• The static constructor neither has an access modifier nor a parameter.

• Before creating the first instance or referencing any static member, the class is automatically initialized by calling the static constructor.

• Static constructor cannot be called directly.

• InProgramThe user cannot control when to execute the static constructor.

• A typical use of a static constructor is to use this constructor to write entries to a log file when the class uses a log file.

• Static constructors are not hostedCodeThis constructor can also be called to create a packaging class.LoadlibraryMethod.

  In this exampleBusThere is a static constructor and a static member.Drive (). WhenDrive ()The static constructor is called to initialize the class.

  Code
  C # copy code Public   Class Bus
  {
  // Static constructor:
  Static Bus ()
  {
  System. Console. writeline ( " The static constructor invoked. " );
  }

  Public Static VoidDrive ()
  {
  System. Console. writeline ("The drive method invoked.");
  }
  }

  ClassTestbus
  {
  Static VoidMain ()
  {
  Bus. Drive ();
  }
  }

   

  Output

  The static constructor invoked.

  The drive method invoked.