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Portability and interoperability rules

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Portability rules support portability across different platforms. Interoperability rules support interaction with COM clients.

In this section

Rule Description
CA1401: P/Invokes should not be visible A public or protected method in a public type has the System.Runtime.InteropServices.DllImportAttribute attribute (also implemented by the Declare keyword in Visual Basic). Such methods should not be exposed.
CA1416: Validate platform compatibility Using platform-dependent APIs on a component makes the code no longer work across all platforms.
CA1417: Do not use OutAttribute on string parameters for P/Invokes String parameters passed by value with the OutAttribute can destabilize the runtime if the string is an interned string.
CA1418: Use valid platform string Platform compatibility analyzer requires a valid platform name and version.
CA1419: Provide a parameterless constructor that is as visible as the containing type for concrete types derived from 'System.Runtime.InteropServices.SafeHandle' Providing a parameterless constructor that is as visible as the containing type for a type derived from System.Runtime.InteropServices.SafeHandle enables better performance and usage with source-generated interop solutions.