To test nullable type variables for Nothing values, use the Is operator or the IsNot operator. : nullable « Language Basics « VB.Net

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To test nullable type variables for Nothing values, use the Is operator or the IsNot operator.

  



Module Module1

    Sub Main()



        Dim n? As Integer



        Console.WriteLine(n Is Nothing)

        n = 4



        Console.WriteLine(n Is Nothing)

        n = Nothing



        Console.WriteLine(n IsNot Nothing)

    End Sub

End Module

Related examples in the same category

1.	Check if nullable is null
2.	Main with Nullable (Of T)

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