Subs

I have seen this code in many places but I have no idea what it does. I know how to use Subroutines but I have no idea what this is:

VB Code:

Private Sub New()
    ***CODE***
End Sub

The thing that I want to know is the "New" part. Any help is appreciated.

It is a constructor for a class.

VB Code:

Public class Cat
 
private _MyName as string = nothing
 
'###########
Public Sub New(byval name as string)
    _MyName = name
End Sub
'###########
 
Public Sub Meow()
    MessageBox.Show("Meow, my name is " & _MyName)
End Sub
 
End Class

Then use this to demonstrate it...

VB Code:

Dim MyCat as cat = New Cat("Tiddles")
MyCat.Meow()

A constructor is used to specify zero or more parameters of a class (VB6 did not support Constructors) and is also used to set up the class so its ready for use.

Constructors can be a complex topic as they can be used for a lot of different things, and classes can even have multiple constructors, each with a different set of parameters.