Cannot implement interface '<interfacename1>' because its implementation could conflict with the implementation of another implemented interface '<interfacename2>' for some type arguments
A class declaration includes an Implements
statement that specifies two or more interfaces, but at least one of the interfaces is generic and two of the implementations could conflict for certain values of type arguments.
The following statements can generate this error.
Public Interface iFace1
Sub testSub(ByVal arg As String)
End Interface
Public Interface iFace2(Of t)
Sub testSub(ByVal arg As t)
End Interface
Public Class testClass
Implements iFace1, iFace2(Of String)
End Class
Because iFace2
is constructed using String
, testClass
must implement two versions of testSub
with identical signatures. Doing so would produce an ambiguity about which version to access.
Error ID: BC32072
Change the type argument supplied to the generic interface so that there is no conflict.
-or-
Remove from the
Implements
statement one of the interfaces resulting in the implementation conflict.
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