ROSLYN.USAGE.CA2257 : Members defined on an interface with the 'DynamicInterfaceCastableImplementationAttribute' should be 'static' (C#)

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ROSLYN.USAGE.CA2257 : Members defined on an interface with the 'DynamicInterfaceCastableImplementationAttribute' should be 'static' (C#)

Summary

Since a type that implements 'IDynamicInterfaceCastable' may not implement a dynamic interface in metadata, calls to an instance interface member that is not an explicit implementation defined on this type are likely to fail at runtime. Mark new interface members 'static' to avoid runtime errors.

This check corresponds to Roslyn rule CA2257. For full rule details, see the Microsoft website: CA2257.

Properties

Class Name	Members defined on an interface with the 'DynamicInterfaceCastableImplementationAttribute' should be 'static' (C#)
Significance	reliability
Mnemonic	ROSLYN.USAGE.CA2257
Categories	None
Availability	Available for C# only.
Enabling	Checks for this warning class are enabled by default. To disable them, add the following WARNING_FILTER rule to the project configuration file. WARNING_FILTER += discard class="Members defined on an interface with the 'DynamicInterfaceCastableImplementationAttribute' should be 'static' (C#)"

Relevant Configuration File Parameters

The following configuration file parameters affect checks for this warning class.