Using For/Next structure to demonstrate summation. : For « Statements « VB.Net Tutorial

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Imports System.Windows.Forms

Module Tester

    Sub Main()
        Dim sum = 0, number As Integer

        ' add even numbers from 2 to 100
        For number = 2 To 100 Step 2
         sum += number
        Next

      Console.WriteLine("The sum is " & sum & "Sum even integers from 2 to 100")
    End Sub 

End Module

The sum is 2550Sum even integers from 2 to 100