> For the complete documentation index, see [llms.txt](https://docs.yarnspinner.dev/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.yarnspinner.dev/2.1/api/csharp/yarn.compiler/yarn.compiler.diagnostic/yarn.compiler.diagnostic..ctor-3.md).

# Diagnostic(string,ParserRuleContext,string,DiagnosticSeverity)

Constructor in [Diagnostic](/2.1/api/csharp/yarn.compiler/yarn.compiler.diagnostic.md)

## Summary

```csharp
public Diagnostic(string fileName, ParserRuleContext context, string message, DiagnosticSeverity severity = DiagnosticSeverity.Error)
```

## Parameters

| Name                                                                                                                                                          | Description |
| ------------------------------------------------------------------------------------------------------------------------------------------------------------- | ----------- |
| `string` fileName                                                                                                                                             |             |
| `Antlr4.Runtime.ParserRuleContext` context                                                                                                                    |             |
| `string` message                                                                                                                                              |             |
| [Yarn.Compiler.Diagnostic.DiagnosticSeverity](/2.1/api/csharp/yarn.compiler/yarn.compiler.diagnostic/yarn.compiler.diagnostic.diagnosticseverity.md) severity |             |