Question

How to use ByVal and ByRef with subroutine (sub) in VB.NET

Answer 1

Module Module1

    Sub Main()

        Dim n As Integer = 0

        sub1(n)
        Console.WriteLine(n)

        sub2(n)
        Console.WriteLine(n)

    End Sub

    Sub sub1(ByVal n As Integer)
        n = 13
    End Sub

    Sub sub2(ByRef n As Integer)
        n = 99
    End Sub

End Module


' run:
' 
' 0
' 99

 

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