Share via

Portability Warnings


This article applies to Visual Studio 2015. If you're looking for the latest Visual Studio documentation, see Visual Studio documentation. We recommend upgrading to the latest version of Visual Studio. Download it here

Portability warnings support portability across different operating systems.

In This Section

Rule Description
CA1900: Value type fields should be portable This rule checks that structures that are declared by using an explicit layout attribute will align correctly when marshaled to unmanaged code on 64-bit operating systems.
CA1901: P/Invoke declarations should be portable This rule evaluates the size of each parameter and the return value of a P/Invoke, and verifies that their size is correct when marshaled to unmanaged code on 32-bit and 64-bit operating systems.
CA1903: Use only API from targeted framework A member or type is using a member or type that was introduced in a service pack that was not included together with the targeted framework of the project.