Hello -

I have two Enums for which I would like to define type conversions ...
Public Enum eA
  A2 = 0
  A2 = 1
End Enum

Public Enum eB
  B1 = 2
  B2 = 3
  B3 = 4
End Enum

Is there a way to define a conversion that maps one Enum to the other
because I would like to do the following ...

Dim AA as eA
Dim BB as eB
....
AA = BB

It does not have to be implicit ... so is there a way to overload
CType()?  The following will complie but not work properly since the
Integer representations are different ...
AA = CType(BB, eA)

Is there a way to overload CType for this?  I used to do things like
this in C++ where I would overload a conversion operator to get the
implicit conversion.

Any way to do this in VB?

Thanks!
Joe

Joe,
VB 2005 allows you to overload the CType operator for a type (Class or
Structure) however the method needs to be a Shared within that type. Seeing
as you cannot add methods to Enums, you cannot introduce an overloaded CType
operator between two enums. You could however overload CType between a Class
or Structure and an Enum, by putting the overloaded operator in the Class or
Structure...

I would probably define a helper type that defined the conversions for me,
ala the System.Convert class.

    ' prevent others from inheriting from MyConvert
    Public NotInheritable Class MyConvert

        ' prevent others from instanciating MyConvert.
        Private Sub New
        End Sub

        Public Shared Function ToA(aB As B) As A
            ' convert eA to an eB
        End Function

        Public Shared Function ToB(anA As A) As B
            ' convert eB to eA
        End Function

    End Class

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