Writing a function is similar to writing a procedure. Procedures perform an action, but functions return an answer.
Start a new application and name it Hello. We are going to write the "Hello World" program, but using a function. Write the code as shown below:
'Programmer: Janet Joy 'Say Hello World using a function Public Class Form1 Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load Me.Text = getGreeting() End Sub Public Function getGreeting() As String Return "Hello World" End Function End ClassNotice that the function header (the first line) ends with the type of value the function will return. The last statement in the body of the function is to return a value of that same type.