.editorconfig using dotnet_diagnostic.<RuleId>.severity.
Severity Levels
| Level | Build | Description |
|---|---|---|
error | Fails | Must fix before build succeeds |
warning | Warns | Shows in output, doesn’t fail |
suggestion | IDE only | Shows in editor, not in build |
none | Disabled | Rule is off |
Defaults
[*.cs]
# Errors - bugs that must be fixed
dotnet_diagnostic.AL0001.severity = error # Primary constructor reassignment
dotnet_diagnostic.AL0003.severity = error # Division by zero
dotnet_diagnostic.AL0007.severity = error # GetSchema explicit implementation
dotnet_diagnostic.AL0008.severity = error # GetSchema returns null
dotnet_diagnostic.AL0009.severity = error # Don't call GetSchema
dotnet_diagnostic.AL0020.severity = error # IFormCollection attribute
dotnet_diagnostic.AL0021.severity = error # Multiple form sources
dotnet_diagnostic.AL0022.severity = error # Mixed form collection/DTO
dotnet_diagnostic.AL0023.severity = error # Unsupported form type
dotnet_diagnostic.AL0024.severity = error # Form/body conflict
# Warnings - should fix
dotnet_diagnostic.AL0002.severity = warning # Repeated negated patterns
dotnet_diagnostic.AL0004.severity = warning # Span pattern matching
dotnet_diagnostic.AL0005.severity = warning # Span SequenceEqual
dotnet_diagnostic.AL0006.severity = warning # Field/parameter name conflict
dotnet_diagnostic.AL0011.severity = warning # Lock on non-Lock
dotnet_diagnostic.AL0012.severity = warning # Deprecated OTel convention
dotnet_diagnostic.AL0017.severity = warning # Hardcoded version
dotnet_diagnostic.AL0018.severity = warning # Version.props not imported
dotnet_diagnostic.AL0026.severity = warning # DateTime.Now/UtcNow
dotnet_diagnostic.AL0027.severity = warning # Newtonsoft.Json
# Suggestions - style preferences
dotnet_diagnostic.AL0013.severity = suggestion # Missing schema URL
dotnet_diagnostic.AL0014.severity = suggestion # Pattern matching style
dotnet_diagnostic.AL0015.severity = suggestion # Null-guard style
dotnet_diagnostic.AL0016.severity = suggestion # Declaration + null-check
dotnet_diagnostic.AL0025.severity = suggestion # Static lambda
# Disabled by default
dotnet_diagnostic.AL0010.severity = none # Type should be partial
Disable a Rule
[*.cs]
dotnet_diagnostic.AL0014.severity = none
Disable All Rules
[*.cs]
dotnet_diagnostic.AL0001.severity = none
dotnet_diagnostic.AL0002.severity = none
# ... repeat for each rule