Code quality rule configuration options

The code quality rules have additional configuration options, besides just configuring their severity. For example, each code quality analyzer can be configured to only apply to specific parts of your codebase. You specify these options by adding key-value pairs to the same EditorConfig file where you specify rule severities and general editor preferences.

Note

This article does not detail how to configure a rule's severity. The .editorconfig option to set a rule's severity has a different prefix (dotnet_diagnostic) to the options described here (dotnet_code_quality). In addition, the options described here pertain to code quality rules only, whereas the severity option applies to code style rules as well. As a quick reference, you can configure a rule's severity using the following option syntax:

dotnet_diagnostic.<rule ID>.severity = <severity value>

However, for detailed information about configuring rule severity, see Severity level.

Option scopes

Each refining option can be configured for all rules, for a category of rules (for example, Security or Design), or for a specific rule.

All rules

The syntax for configuring an option for all rules is as follows:

Syntax	Example
dotnet_code_quality.<OptionName> = <OptionValue>	dotnet_code_quality.api_surface = public

The values for <OptionName> are listed under Options.

Category of rules

The syntax for configuring an option for a category of rules is as follows:

Syntax	Example
dotnet_code_quality.<RuleCategory>.<OptionName> = OptionValue	dotnet_code_quality.Naming.api_surface = public

The following table lists the available values for <RuleCategory>.

Design
Documentation
Globalization
Interoperability

Maintainability
Naming
Performance
SingleFile

Reliability
Security
Usage

Specific rule

The syntax for configuring an option for a specific rule is as follows:

Syntax	Example
dotnet_code_quality.<RuleId>.<OptionName> = <OptionValue>	dotnet_code_quality.CA1040.api_surface = public

Options

This section lists some of the available options. To see the full list of available options, see Analyzer configuration.

• api_surface
• exclude_async_void_methods
• exclude_single_letter_type_parameters
• output_kind
• required_modifiers
• exclude_extension_method_this_parameter
• null_check_validation_methods
• additional_string_formatting_methods
• excluded_type_names_with_derived_types
• excluded_symbol_names
• disallowed_symbol_names
• exclude_ordefault_methods
• ignore_internalsvisibleto
• try_determine_additional_string_formatting_methods_automatically
• unsafe_DllImportSearchPath_bits
• exclude_aspnet_core_mvc_controllerbase
• dispose_analysis_kind
• dispose_ownership_transfer_at_constructor
• dispose_ownership_transfer_at_method_call
• enum_values_prefix_trigger
• exclude_indirect_base_types
• additional_required_suffixes
• additional_required_generic_interfaces
• additional_inheritance_excluded_symbol_names
• analyzed_symbol_kinds
• use_naming_heuristic
• additional_use_results_methods
• allowed_suffixes
• enable_platform_analyzer_on_pre_net5_target
• exclude_structs
• additional_enum_none_names
• enumeration_methods
• linq_chain_methods
• assume_method_enumerates_parameters

api_surface

Description	Allowable values	Default value	Configurable rules
Which part of the API surface to analyze	public (applies to public and protected APIs) internal or friend (applies to internal and private protected APIs) private (applies to private APIs) all (applies to all APIs) Separate multiple values with a comma (,)	public	CA1000 CA1002 CA1003 CA1005 CA1008 CA1010 CA1012 CA1021 CA1024 CA1027 CA1028 CA1030 CA1036 CA1040 CA1041 CA1043 CA1044 CA1045 CA1046 CA1047 CA1051 CA1052 CA1054 CA1055 CA1056 CA1058 CA1062 CA1063 CA1068 CA1070 CA1700 CA1707 CA1708 CA1710 CA1711 CA1714 CA1715 CA1716 CA1717 CA1720 CA1721 CA1725 CA1801 CA1802 CA1815 CA1819 CA1822 CA1859 CA2208 CA2217 CA2225 CA2226 CA2231 CA2234

exclude_async_void_methods

Description	Allowable values	Default value	Configurable rules
Whether to ignore asynchronous methods that don't return a value	true false	false	CA2007

Note

This option was named skip_async_void_methods in an earlier version.

exclude_single_letter_type_parameters

Description	Allowable values	Default value	Configurable rules
Whether to exclude single-character type parameters from the rule, for example, S in Collection<S>	true false	false	CA1715

Note

This option was named allow_single_letter_type_parameters in an earlier version.

output_kind

Description	Allowable values	Default value	Configurable rules
Specifies that code in a project that generates this type of assembly should be analyzed	One or more fields of the OutputKind enumeration Separate multiple values with a comma (,)	All output kinds	CA2007

required_modifiers

Description	Allowable values	Default value	Configurable rules
Specifies the required modifiers for APIs that should be analyzed	One or more values from the below allowed modifiers table Separate multiple values with a comma (,)	Depends on each rule	CA1802

Allowed Modifier	Summary
none	No modifier requirement
static or Shared	Must be declared as static (Shared in Visual Basic)
const	Must be declared as const
readonly	Must be declared as readonly
abstract	Must be declared as abstract
virtual	Must be declared as virtual
override	Must be declared as override
sealed	Must be declared as sealed
extern	Must be declared as extern
async	Must be declared as async

exclude_extension_method_this_parameter

Description	Allowable values	Default value	Configurable rules
Whether to skip analysis for the this parameter of extension methods	true false	false	CA1062

null_check_validation_methods

Description	Allowable values	Default value	Configurable rules
Names of null-check validation methods that validate that arguments passed to the method are non-null	Allowed method name formats (separated by |): - Method name only (includes all methods with the name, regardless of the containing type or namespace) - Fully qualified names in the symbol's documentation ID format, with an optional M: prefix	None	CA1062

additional_string_formatting_methods

Description	Allowable values	Default value	Configurable rules
Names of additional string formatting methods	Allowed method name formats (separated by |): - Method name only (includes all methods with the name, regardless of the containing type or namespace) - Fully qualified names in the symbol's documentation ID format, with an optional M: prefix	None	CA2241

excluded_type_names_with_derived_types

Description	Allowable values	Default value	Configurable rules
Names of types, such that the type and all its derived types are excluded for analysis	Allowed symbol name formats (separated by |): - Type name only (includes all types with the name, regardless of the containing type or namespace) - Fully qualified names in the symbol's documentation ID format, with an optional T: prefix	None	CA1001 CA1054 CA1055 CA1056 CA1062 CA1068 CA1303 CA1304 CA1305 CA1508 CA2000 CA2100 CA2301 CA2302 CA2311 CA2312 CA2321 CA2322 CA2327 CA2328 CA2329 CA2330 CA3001 CA3002 CA3003 CA3004 CA3005 CA3006 CA3007 CA3008 CA3009 CA3010 CA3011 CA3012 CA5361 CA5376 CA5377 CA5378 CA5380 CA5381 CA5382 CA5383 CA5384 CA5387 CA5388 CA5389 CA5390 CA5399 CA5400

excluded_symbol_names

Description	Allowable values	Default value	Configurable rules
Names of symbols that are excluded for analysis	Allowed symbol name formats (separated by |): - Symbol name only (includes all symbols with the name, regardless of the containing type or namespace) - Fully qualified names in the symbol's documentation ID format. Each symbol name requires a symbol kind prefix, such as M: prefix for methods, T: prefix for types, and N: prefix for namespaces. - .ctor for constructors and .cctor for static constructors	None	CA1001 CA1054 CA1055 CA1056 CA1062 CA1068 CA1303 CA1304 CA1305 CA1508 CA2000 CA2100 CA2301 CA2302 CA2311 CA2312 CA2321 CA2322 CA2327 CA2328 CA2329 CA2330 CA3001 CA3002 CA3003 CA3004 CA3005 CA3006 CA3007 CA3008 CA3009 CA3010 CA3011 CA3012 CA5361 CA5376 CA5377 CA5378 CA5380 CA5381 CA5382 CA5383 CA5384 CA5387 CA5388 CA5389 CA5390 CA5399 CA5400

disallowed_symbol_names

Description	Allowable values	Default value	Configurable rules
Names of symbols that are disallowed in the context of the analysis	Allowed symbol name formats (separated by |): - Symbol name only (includes all symbols with the name, regardless of the containing type or namespace) - Fully qualified names in the symbol's documentation ID format. Each symbol name requires a symbol kind prefix, such as M: prefix for methods, T: prefix for types, and N: prefix for namespaces. - .ctor for constructors and .cctor for static constructors	None	CA1031

exclude_ordefault_methods

Description	Allowable values	Default value	Configurable rules
Excludes FirstOrDefault and LastOrDefault methods from analysis.	true or false	false	CA1826

ignore_internalsvisibleto

Description	Allowable values	Default value	Configurable rules
Includes assemblies marked with InternalsVisibleToAttribute in analysis.	true or false	true	CA1812 CA1852

try_determine_additional_string_formatting_methods_automatically

Description	Allowable values	Default value	Configurable rules
Boolean option to enable heuristic detection of additional string formatting methods. A method is considered a string formatting method if it has a string format parameter followed by a params object[] parameter.	true or false	false	CA2241

unsafe_DllImportSearchPath_bits

Description	Allowable values	Default value	Configurable rules
Configure which value of DllImportSearchPath is unsafe for the analysis	Integer values of System.Runtime.InteropServices.DllImportSearchPath	770 (that is, AssemblyDirectory | UseDllDirectoryForDependencies | ApplicationDirectory)	CA5393

exclude_aspnet_core_mvc_controllerbase

Description	Allowable values	Default value	Configurable rules
Exclude ASP.NET Core MVC ControllerBase when considering CSRF	true or false	true	CA5391

dispose_analysis_kind

Description	Allowable values	Default value	Configurable rules
Specifies which paths to analyze for dispose violations	- AllPaths - Track and report missing dispose violations on all paths (non-exception and exception paths). Additionally, also flag use of non-recommended dispose patterns that might cause potential dispose leaks. - AllPathsOnlyNotDisposed - Track and report missing dispose violations on all paths (non-exception and exception paths). Do not flag use of non-recommended dispose patterns that might cause potential dispose leaks. - NonExceptionPaths - Track and report missing dispose violations only on non-exception program paths. Additionally, also flag use of non-recommended dispose patterns that might cause potential dispose leaks. - NonExceptionPathsOnlyNotDisposed - Track and report missing dispose violations only on non-exception program paths. Do not flag use of non-recommended dispose patterns that might cause potential dispose leaks.	NonExceptionPaths	CA2000

dispose_ownership_transfer_at_constructor

Description	Allowable values	Default value	Configurable rules
Configure dispose ownership transfer for arguments passed to constructor invocation	true or false	false	CA2000

dispose_ownership_transfer_at_method_call

Description	Allowable values	Default value	Configurable rules
Configure dispose ownership transfer for disposable objects passed as arguments to method calls	true or false	false	CA2000

enum_values_prefix_trigger

Description	Allowable values	Default value	Configurable rules
Specifies the threshold to trigger the enum values naming rule	- AnyEnumValue - The rule is triggered if any of the enum values starts with the enum type name. - AllEnumValues - The rule is triggered if all of the enum values start with the enum type name. - Heuristic - The rule is triggered using the default FxCop heuristic (that is, when at least 75% of the enum values start with the enum type name).	Heuristic	CA1712

exclude_indirect_base_types

Description	Allowable values	Default value	Configurable rules
Exclude indirect base types	true or false	true	CA1710

additional_required_suffixes

Description	Allowable values	Default value	Configurable rules
Specifies additional required suffixes	List of type names (separated by |) with their required suffix (separated by ->). Allowed type name formats: - Type name only (includes all types with the name, regardless of the containing type or namespace). - Fully qualified names in the symbol's documentation ID format with an optional T: prefix.	None	CA1710

additional_required_generic_interfaces

Description	Allowable values	Default value	Configurable rules
Specifies additional required generic interfaces	List of interface names (separated by |) with their required generic fully qualified interface (separated by ->). Allowed interface formats: - Interface name only (includes all interfaces with the name, regardless of the containing type or namespace). - Fully qualified names in the symbol's documentation ID format with an optional T: prefix.	None	CA1010

Examples:

Option Value	Summary
dotnet_code_quality.CA1010.additional_required_generic_interfaces = ISomething->System.Collections.Generic.IEnumerable`1	All types implementing ISomething regardless of its namespace are expected to also implement System.Collections.Generic.IEnumerable\`1.
dotnet_code_quality.CA1010.additional_required_generic_interfaces = T:System.Collections.IDictionary->T:System.Collections.Generic.IDictionary`2	All types implementing System.Collections.IDictionary are expected to also implement System.Collections.Generic.IDictionary`2.

additional_inheritance_excluded_symbol_names

Description	Allowable values	Default value	Configurable rules
Specifies types or namespaces to exclude from the inheritance hierarchy tree	Allowed type name formats: - Type or namespace name (includes all types with the name, regardless of the containing type or namespace, and all types whose namespace contains the name). - Type or namespace name ending with a wildcard symbol (includes all types whose name starts with the given name, regardless of the containing type or namespace, and all types whose namespace contains the name). - Fully qualified names in the symbol's documentation ID format with an optional T: prefix for types or N: prefix for namespaces. - Fully qualified type or namespace name with an optional T: prefix for type or N: prefix for namespace and ending with the wildcard symbol (includes all types whose fully qualified name starts with the given type name, or all types whose fully qualified name starts with the given namespace name).	N:System.* (This value is always automatically added to the value provided)	CA1501

analyzed_symbol_kinds

Description	Allowable values	Default value	Configurable rules
Specifies the symbol kinds to analyze	One or more fields of SymbolKind as a comma-separated list.	Namespace, NamedType, Method, Property, Event, Parameter	CA1716

use_naming_heuristic

Description	Allowable values	Default value	Configurable rules
Configures whether parameters or property names containing Text, Message, or Caption trigger this rule	true or false	false	CA1303

additional_use_results_methods

Description	Allowable values	Default value	Configurable rules
Specifies additional custom APIs whose results must be used	Names of additional methods (separated by |). Allowed method name formats: - Method name only (includes all methods with the name, regardless of the containing type or namespace). - Fully qualified names in the symbol's documentation ID format with an optional M: prefix.	None	CA1806

allowed_suffixes

Description	Allowable values	Default value	Configurable rules
Specifies allowable suffixes	List (separated by |) of allowed suffixes.	None	CA1711

enable_platform_analyzer_on_pre_net5_target

Description	Allowable values	Default value	Configurable rules
Specifies whether to enable analysis for TFMs prior to .NET 5	true or false	false	CA1416

exclude_structs

Description	Allowable values	Default value	Configurable rules
Specifies whether to exclude structs from analysis	true or false	false	CA1051

additional_enum_none_names

Description	Allowable values	Default value	Configurable rules
Specifies additional allowable names for a zero-value enumeration field	List of additional names (separated by |).	None	CA1008

enumeration_methods

Description	Allowable values	Default value	Configurable rules
Specifies additional custom methods that enumerate an IEnumerable	Fully qualified names of additional methods (separated by |).	None	CA1851

linq_chain_methods

Description	Allowable values	Default value	Configurable rules
Specifies additional customized LINQ chain methods (that is, methods take an IEnumerable argument and return a new IEnumerable instance)	Fully qualified names of additional methods (separated by |).	None	CA1851

assume_method_enumerates_parameters

Description	Allowable values	Default value	Configurable rules
Specifies whether to assume that customized methods enumerate their IEnumerable parameters	true or false	false	CA1851