Add accessibility modifiers (IDE0040)

Grein
06/25/2022

Property	Value
Rule ID	IDE0040
Title	Add accessibility modifiers
Category	Style
Subcategory	Language rules (modifier preferences)
Applicable languages	C# and Visual Basic
Introduced version	Visual Studio 2017
Options	`dotnet_style_require_accessibility_modifiers`

Overview

This style rule concerns requiring accessibility modifiers in declarations.

Options

The option value specifies the preferences for required accessibility modifiers.

For information about configuring options, see Option format.

dotnet_style_require_accessibility_modifiers

Property	Value	Description
Option name	dotnet_style_require_accessibility_modifiers
Option values	`always`	Prefer accessibility modifiers to be specified.
	`for_non_interface_members`	Prefer accessibility modifiers except for public interface members.
	`never`	Do not prefer accessibility modifiers to be specified.
	`omit_if_default`	Prefer accessibility modifiers except if they are the default modifier.
Default option value	`for_non_interface_members`

// dotnet_style_require_accessibility_modifiers = always
// dotnet_style_require_accessibility_modifiers = for_non_interface_members
class MyClass
{
    private const string thisFieldIsConst = "constant";
}

// dotnet_style_require_accessibility_modifiers = never
class MyClass
{
    const string thisFieldIsConst = "constant";
}

Suppress a warning

If you want to suppress only a single violation, add preprocessor directives to your source file to disable and then re-enable the rule.

#pragma warning disable IDE0040
// The code that's violating the rule is on this line.
#pragma warning restore IDE0040

To disable the rule for a file, folder, or project, set its severity to none in the configuration file.

ini

[*.{cs,vb}]
dotnet_diagnostic.IDE0040.severity = none

To disable all of the code-style rules, set the severity for the category Style to none in the configuration file.

ini

[*.{cs,vb}]
dotnet_analyzer_diagnostic.category-Style.severity = none

For more information, see How to suppress code analysis warnings.

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