Constructor (VB.Net and ASP Classic Cross Reference Guide)

In VB.Net, a constructor is called whenever a class or struct is created. A constructor is a sub named New. You can overload the constructor simply by adding two or more New subs with various parameters (overloaded constructors).

If you do not create a constructor, VB.Net will create an implicit constructor that initializes all member fields to their default values.

Constructors can execute at two different times. Static constructors are executed by the CLR before any objects are instantiated. Regular constructors are executed when you create an object.

You can invoke the parent constructor with MyBase.New.

Public Class Cyborg
  Public CyborgName As String

  Public Sub New(ByVal pName As String)
    CyborgName = pName
  End Sub
End Class

 VB.Net Constructors (New)  

When an object instance is created from a class, ASP calls a special parameter-less sub named Class_Initialize. Since you cannot specify parameters for this sub, you also cannot overload it.

When a class is destroyed, ASP calls a special sub called Class_Terminate.

Class Cyborg
  Public CyborgName
 
  Public Sub Class_Initialize
   Response.Write "<br>Class created"
   CyborgName = "Cameron"
  End Sub 

End Class

 ASP Classic Constructors (Class_Initialize)