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► KB ► To/From Guides ► VB.Net

Custom Routines (VB.Net and C# Cross Reference Guide)

By Mike Prestwood

VB.Net versus C#: A side by side comparison between VB.Net and C#.

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

C#:

C# requires () in both the function declaration, and when it's invoked. Leave off the parens to signify a property.

ReturnType RoutineName()

Syntax Example:

void SayHello(String pName)
{
  MessageBox.Show("Hello " + pName);
}

int Add(int a, int b) 
{
  return a + b;
}