Listing Even Numbers in VB.Net

What are Even Numbers?

Hello pupils, what are even numbers?
Answer:
Even numbers are numbers that are divisible by 2.

They include:

2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, ...

Well then, let's see how we can write a programming code to make our computer list a set of even numbers in the Visual Basic (VB.Net) language, between a given range of values.

Create a new Visual Basic Console Project; call it Arithmetic.vb.
You can rename the module name -- just right-click on the name from the Solution Explorer panel -- to EvenModule if you want.
Create a new Visual Basic Class File; call it EvenNumbers.vb.

Type out the adjoining Visual Basic code for listing even numbers.
We will see what each significant part does as we go along.

VB.Net code for evenNumbers Class File.

Public Class EvenNumbers

    Dim first As Integer
    Dim last As Integer
    Dim result As New List(Of Integer)

    ' Simulate a constructor
    Public Sub _init_(alpha As Integer, omega As Integer)
        first = alpha
        last = omega
    End Sub

    ' Returns an list Of the desired Set Of even numbers
    Public Function prepResult() As List(Of Integer)
        ' Loop from start to stop and rip out even numbers;

        Dim i = 0
        For i = first To last
            If i Mod 2 = 0 Then ' modulo(%) is explained later
                result.Add(i)
            End If
        Next i

        Return result
    End Function

End Class

Main module code.

Module Arithmetic_EvenNumbers

    Sub Main()

        ' Use the even number Class
        Dim lower_boundary = 1
        Dim upper_boundary = 100
        Dim even_list As New EvenNumbers
        even_list._init_(lower_boundary, upper_boundary)
        Dim answer = even_list.prepResult()

        Console.WriteLine("Even numbers between " & lower_boundary & " and " & upper_boundary & " are:")
        Console.Write(String.Join(", ", answer))

    End Sub

End Module

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