Does it use nullable reference types?

Yes for .NET 6+. Toggle off if you target earlier versions. Optional primitives become `int?`; optional strings become `string?`.

How are arrays handled?

Lists by default (`List `). Toggle to arrays (`T[]`) if your codebase prefers them. Empty arrays infer as `List `; best to fix the sample.

PascalCase property names with `[JsonPropertyName("original_name")]` attributes when the JSON key doesn't match PascalCase conventions.

Yes — toggle output style to 'record' for immutable C# records with positional parameters. Great for DTOs in modern .NET.

Generate a C# class with properties + nullables from JSON. Part of the DevTools Surf developer suite. Browse more tools in the Converters collection.

C# was originally codenamed 'Cool' (C-like Object Oriented Language) before Microsoft's marketing team chose the musical name C# in 2000.
System.Text.Json, introduced in .NET Core 3.0 (2019), is up to 2x faster than Newtonsoft.Json for serialization because it uses Span<T> and avoids allocations.
Anders Hejlsberg, the creator of C#, also created Turbo Pascal and was the lead architect of Delphi before joining Microsoft.

Does it use nullable reference types?: Yes for .NET 6+. Toggle off if you target earlier versions. Optional primitives become `int?`; optional strings become `string?`.
How are arrays handled?: Lists by default (`List<T>`). Toggle to arrays (`T[]`) if your codebase prefers them. Empty arrays infer as `List<object>`; best to fix the sample.
What about property naming?: PascalCase property names with `[JsonPropertyName("original_name")]` attributes when the JSON key doesn't match PascalCase conventions.
Does it support records?: Yes — toggle output style to 'record' for immutable C# records with positional parameters. Great for DTOs in modern .NET.

Generate a C# class with properties + nullables from JSON. Part of the DevTools Surf developer suite. Browse more tools in the Converters collection.

C# was originally codenamed 'Cool' (C-like Object Oriented Language) before Microsoft's marketing team chose the musical name C# in 2000.
System.Text.Json, introduced in .NET Core 3.0 (2019), is up to 2x faster than Newtonsoft.Json for serialization because it uses Span<T> and avoids allocations.
Anders Hejlsberg, the creator of C#, also created Turbo Pascal and was the lead architect of Delphi before joining Microsoft.

Does it use nullable reference types?: Yes for .NET 6+. Toggle off if you target earlier versions. Optional primitives become `int?`; optional strings become `string?`.
How are arrays handled?: Lists by default (`List<T>`). Toggle to arrays (`T[]`) if your codebase prefers them. Empty arrays infer as `List<object>`; best to fix the sample.
What about property naming?: PascalCase property names with `[JsonPropertyName("original_name")]` attributes when the JSON key doesn't match PascalCase conventions.
Does it support records?: Yes — toggle output style to 'record' for immutable C# records with positional parameters. Great for DTOs in modern .NET.