All rules
CA1014Design Enabled by default: No

Mark assemblies with CLSCompliantAttribute

Mark assemblies with CLSCompliantAttribute

Microsoft docs

Description

The Common Language Specification (CLS) defines naming restrictions, data types, and rules to which assemblies must conform if they will be used across programming languages. Good design dictates that all assemblies explicitly indicate CLS compliance with System.CLSCompliantAttribute. If the attribute is not present on an assembly, the assembly is not compliant.

It is possible for a CLS-compliant assembly to contain types or type members that are not compliant.

Cause

An assembly does not have the System.CLSCompliantAttribute attribute applied to it.

How to fix violations

To fix a violation of this rule, add the attribute to the assembly. Instead of marking the whole assembly as noncompliant, you should determine which type or type members are not compliant and mark these elements as such. If possible, you should provide a CLS-compliant alternative for noncompliant members so that the widest possible audience can access all the functionality of your assembly.

Example

[assembly:CLSCompliant(true)]
namespace DesignLibrary {}

When to suppress

Do not suppress a warning from this rule. If you do not want the assembly to be compliant, apply the attribute and set its value to false.

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