Simplify new
expression (IDE0090)
Property | Value |
---|---|
Rule ID | IDE0090 |
Title | Simplify new expression |
Category | Style |
Subcategory | Language rules (expression-level preferences) |
Applicable languages | C# 9.0+ |
Options | csharp_style_implicit_object_creation_when_type_is_apparent |
Overview
This style rule concerns the use of C# 9.0 target-typed new expressions when the created type is apparent.
Options
Options specify the behavior that you want the rule to enforce. For information about configuring options, see Option format.
csharp_style_implicit_object_creation_when_type_is_apparent
Property | Value | Description |
---|---|---|
Option name | csharp_style_implicit_object_creation_when_type_is_apparent | |
Option values | true |
Prefer target-typed new expressions when created type is apparent |
false |
Do not prefer target-typed new expressions |
|
Default option value | true |
// csharp_style_implicit_object_creation_when_type_is_apparent = true
C c = new();
C c2 = new() { Field = 0 };
// csharp_style_implicit_object_creation_when_type_is_apparent = false
C c = new C();
C c2 = new C() { Field = 0 };
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 IDE0090
// The code that's violating the rule is on this line.
#pragma warning restore IDE0090
To disable the rule for a file, folder, or project, set its severity to none
in the configuration file.
[*.{cs,vb}]
dotnet_diagnostic.IDE0090.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
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