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Custom Routines (VB.Net and ASP Classic Cross Reference Guide)

By Mike Prestwood

VB.Net versus ASP Classic: A side by side comparison between VB.Net and ASP Classic.

Language Details

Language Details is kind of a catch all for stuff that didn't make it into language basics nor any other category.

Custom Routines

[Other Languages]

Languages Focus

For non-OOP languages, a custom routine is a function, procedure, or subroutine and for pure OOP languages, a custom routine is a class method. Hybrid languages (both non-OOP and OOP) combine both.

VB.Net: Sub, Function

VB.Net is a fully OOP language so both Subs and Functions are methods of a class. A Sub does not return a value while a Function does.

Syntax Example: 1 certification question.

Private Sub DoSomething(ByVal pMsg As String)
  '...some code.
End Sub
 
Private Function GetAge(ByVal x As String) As Integer
  GetAge = 7
End Function

ASP Classic: Sub, Function

ASP Classic is a non-OOP language with some OOP features. It offers both Subs and Functions. A Sub does not return a value while a Function does. When Subs and Functions are used in a defined class, they become the methods of the class.

Syntax Example:

Sub SayHello(ByVal pName)
  Response.Write "Hello " + pName + "!<br>"
End Sub
 
Function Add(ByRef pN1, ByRef pN2)
  Add = pN1 + pN2
End Function

ASP Classic Custom Routines (Sub, Function)