nub question

[Guest]

I'm new to programming and alot of the tutorials and books i'm looking at
have things like
Public Sub, Private Sub, Public Function, etc what is the difference on the
3 and when should each one be used?

 

[Chris, Master of All Things Insignificant]

You missed a 4th one: Private Function.

Function vs. Sub: A function returns a value from it. A sub does not
return a value. So the choice is of which to use obvious based on if you
need a value returned

Public vs. Private: This is a scope identifier. Public function/subs can be
called from outside the class. Private function/subs can be called only
inside the class. Use private unless you have a reason to make the function
aviable from outside the class. Any function you call such as
String.SubString(...) is marked as public.

Chris

 

[Dennis D.]

Subs or subroutines are different from functions only in that a function
will return something, where a sub is not intended to return anything to the
caller.

 

[Cor Ligthert]

Mike,

In C related languages
Void = Sub in VB(Net)
The rest is Function

In an otherway told
Sub does not return a value/object
Function should always have a as x, which is the return type.

Private, Friend, Public, Protected is about the access you give to those
methods.

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vbcn7/html/vbconaccessibility.asp

I hope this helps?

Cor