Question 1

How to set up GraphQL.NET with ASP.NET Core dependency injection?

Accepted Answer

Use the GraphQL.MicrosoftDI package and call services.AddGraphQL in ConfigureServices. This integrates seamlessly with ASP.NET Core's DI container, as shown in the README example with AddSchema and AddSystemTextJson.

Question 2

GraphQL.NET vs Hot Chocolate – which one is better for .NET?

Accepted Answer

GraphQL.NET is a mature, spec-compliant library with a focus on flexibility and control, while Hot Chocolate offers more built-in conveniences like automatic schema generation. Choose GraphQL.NET for fine-grained control or Hot Chocolate for faster setup.

Question 3

How to handle subscriptions in GraphQL.NET for real-time updates?

Accepted Answer

Subscriptions are supported via the DocumentExecuter and require setting up a subscription resolver. The README points to documentation for implementing real-time APIs, but it lacks out-of-the-box transport layers like WebSockets.

Question 4

Does GraphQL.NET support AOT compilation for iOS or Android apps?

Accepted Answer

Yes, it supports ahead-of-time compilation for .NET 7+ with some caveats: schema-first and type-first schemas have additional limitations, and you must register types in DI to prevent trimming, as noted in the AOT section.

Question 5

How to use DataLoader to batch database queries in GraphQL.NET?

Accepted Answer

Install the GraphQL.DataLoader package and implement IDataLoaderContextAccessor. DataLoader batches and caches data fetches to avoid N+1 query problems, improving performance, with examples in the documentation.

Question 6

What are the differences between schema-first and code-first in GraphQL.NET?

Accepted Answer

Schema-first uses GraphQL SDL to define the schema, while code-first uses C# classes and attributes. Code-first offers better type safety and .NET integration, but schema-first is more declarative and easier for GraphQL-centric teams.

GraphQL.NET

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