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CA1711: Identifiers should not have incorrect suffix

TypeName

IdentifiersShouldNotHaveIncorrectSuffix

CheckId

CA1711

Category

Microsoft.Naming

Breaking Change

Breaking

An identifier has an incorrect suffix.

By convention, only the names of types that extend certain base types or that implement certain interfaces, or types derived from these types, should end with specific reserved suffixes. Other type names should not use these reserved suffixes.

The following table lists the reserved suffixes and the base types and interfaces with which they are associated.

Suffix

Base type/Interface

Attribute

Attribute

Collection

ICollection

IEnumerable

Queue

Stack

ICollection

DataSet

DataTable

Dictionary

IDictionary

IDictionary

EventArgs

EventArgs

EventHandler

An event-handler delegate

Exception

Exception

Permission

IPermission

Queue

Queue

Stack

Stack

Stream

Stream

In addition, the following suffixes should not be used:

  • Delegate

  • Enum

  • Impl - use 'Core' instead

  • Ex or similar suffix to distinguish it from an earlier version of the same type

Naming conventions provide a common look for libraries that target the common language runtime. This reduces the learning curve that is required for new software libraries, and increases customer confidence that the library was developed by someone who has expertise in developing managed code.

Remove the suffix from the type name.

Do not suppress a warning from this rule unless the suffix has an unambiguous meaning in the application domain.

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