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Fix IOpenApiDocumentProvider injection sample (keyed DI) #36426

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Fix IOpenApiDocumentProvider injection sample (keyed DI) #36426

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9 changes: 5 additions & 4 deletions aspnetcore/fundamentals/openapi/using-openapi-documents.md
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Original file line number Diff line number Diff line change
Expand Up @@ -109,21 +109,22 @@ public class DocumentService
{
private readonly IOpenApiDocumentProvider _documentProvider;

public DocumentService(IOpenApiDocumentProvider documentProvider)
public DocumentService([FromKeyedServices("v1")] IOpenApiDocumentProvider documentProvider)
{
_documentProvider = documentProvider;
}

public async Task<OpenApiDocument> GetApiDocumentAsync()
public Task<OpenApiDocument> GetApiDocumentAsync(CancellationToken cancellationToken = default)
{
return await _documentProvider.GetOpenApiDocumentAsync("v1");
return _documentProvider.GetOpenApiDocumentAsync(cancellationToken);
}
}
```

Register the service in your DI container:
Register the service in your DI container. Note that service key "v1" should match the document name passed to `AddOpenApi`:

```csharp
builder.Services.AddOpenApi("v1");
builder.Services.AddScoped<DocumentService>();
```

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