Add readonly modifier (IDE0044)
Property | Value |
---|---|
Rule ID | IDE0044 |
Title | Add readonly modifier |
Category | Style |
Subcategory | Language rules (field preferences) |
Applicable languages | C# and Visual Basic |
Introduced version | Visual Studio 2017 |
Options | dotnet_style_readonly_field |
Overview
This style rule concerns specifying the readonly
(C#) or ReadOnly
(Visual Basic) modifier for private fields that are initialized (either inline or inside of a constructor) but never reassigned.
Options
Options specify the behavior that you want the rule to enforce. For information about configuring options, see Option format.
dotnet_style_readonly_field
Property | Value | Description |
---|---|---|
Option name | dotnet_style_readonly_field | |
Option values | true |
Prefer that private fields be marked readonly if they're only ever assigned inline or in a constructor |
false |
Specify no preference over whether private fields are marked readonly |
|
Default option value | true |
// dotnet_style_readonly_field = true
class MyClass
{
private readonly int _daysInYear = 365;
}
' dotnet_style_readonly_field = true
Public Class MyClass
Private ReadOnly daysInYear As Int = 365
End Class
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 IDE0044
// The code that's violating the rule is on this line.
#pragma warning restore IDE0044
To disable the rule for a file, folder, or project, set its severity to none
in the configuration file.
[*.{cs,vb}]
dotnet_diagnostic.IDE0044.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
Phản hồi
https://aka.ms/ContentUserFeedback.
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