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Editorial Team
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Asked: 2026-06-08T12:09:22+00:00

Is there a reason why you have to specify variable names in interfaces. For

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Is there a reason why you have to specify variable names in interfaces. For example, look at the code below:

 Public Class Class1
        Public Function Test(ByVal j As Integer)

        End Function End Class

    Public Interface int1
        Function Test(ByVal i As Integer)
      End Interface

The integer in the class is named j, but it is named i in the interface. Why wouldn’t the interface be like this:

Public Interface int1
            Function Test(Integer)
          End Interface

I realise this is a basic question. I just find it curious.

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1 Answer

  1. Editorial Team

    At the very least, in 2.0, if the override didn’t match the interface signature, then you weren’t technically implementing it http://msdn.microsoft.com/en-us/library/ms182251(v=vs.80).aspx

    I’m not sure about it nowadays. And as for why? I dunno. Are you coming from another language? If I recall right, other language header files only required the type in the signature but not a name.

    Possible dupe of Why do we have to name interface method parameters? -this explains a couple other reasons that you might encounter.

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