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Test if an object implements an interface

Answer 1

+7 A:

If TypeOf objectParameter Is ISpecifiedInterface Then
    'do stuff
End If

AJ 2009-09-01 02:41:36

Note that if "do stuff" requires invoking a member of the interface on the object, you probably want to use 'As' to cast and then ensure object 'IsNot Nothing'. (This prevents an unnecessary second cast.)

bobbymcr 2009-09-01 03:34:29

Answer 2

+2 A:

requiredInterface.IsAssignableFrom(representedType)

both requiredInterface and representedType are Types

Joe Caffeine 2009-09-01 02:42:50

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Test if an object implements an interface

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