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Use expression body for methods (IDE0022)

  • Article
Property Value
Rule ID IDE0022
Title Use expression body for methods
Category Style
Subcategory Language rules (expression-bodied members)
Applicable languages C#
Options csharp_style_expression_bodied_methods

Overview

This style rule concerns the use of expression bodies versus block bodies for methods.

Options

Set the value of the associated option for this rule to specify whether expression bodies or block bodies for methods are preferred, and if expression bodies are preferred, whether they're preferred only for single-line expressions.

For more information about configuring options, see Option format.

csharp_style_expression_bodied_methods

Property Value Description
Option name csharp_style_expression_bodied_methods
Option values true Prefer expression bodies for methods
when_on_single_line Prefer expression bodies for methods when they will be a single line
false Prefer block bodies for methods
Default option value false 
// csharp_style_expression_bodied_methods = true
public int GetAge() => this.Age;

// csharp_style_expression_bodied_methods = false
public int GetAge() { return this.Age; }

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 IDE0022
// The code that's violating the rule is on this line.
#pragma warning restore IDE0022

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

[*.{cs,vb}]
dotnet_diagnostic.IDE0022.severity = none

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

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

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

See also