All inherited interface members should be implemented on an interface marked with DynamicInterfaceCastableImplementationAttribute (original) (raw)
An interface marked with a System.Runtime.InteropServices.DynamicInterfaceCastableImplementationAttribute attribute should provide a default interface implementation of all inherited interface methods and should not provide any new non-private interface methods without a default implementation.
interface Foo { void Frob(); }
[DynamicInterfaceCastableImplementation] interface Bar : Foo { void Baz(); }
Category: Usage
Default: Enabled
Severity: Warning
When a method is not implemented, a warning will be emitted on the attributed interface name. A code fix will be offered to implement the method with a default implementation that throws a NotImplementedException.
When a method is defined on the implementation interface, a warning will be emitted on the method name. If the method has a body, a code fix will be offered to make the method public sealed. Otherwise, a code fix will be offered to make the method sealed and add a body that throws a NotImplementedException.