[JsonProperty] annotations (Newtonsoft.Json). It suits a wide range of C# environments including .NET Core, ASP.NET, WPF and Unity, and is an efficient helper when integrating with REST APIs or message queues.json to c# poco with newtonsoft jsonproperty
Json to c# poco with newtonsoft jsonproperty. This tool handles this and related scenarios — including generate unity c# model from game config json and json to c# dto with dataannotations validation — entirely in your browser with no signup or file upload.
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Generate c# class from api json with system.text.json. Whether you work with API data, config files, or log output, everything is processed locally. Related tasks like json to c# dto with dataannotations validation are also supported.
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Json to c# record with nullable reference types. You can also use this tool for xamarin json response to c# model class and json to c# class with jsonpropertyname attributes. All results appear instantly in the editor — no server round-trip required.
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Json to c# class with datetimeoffset type. All processing happens on your device, ensuring your data stays private. Related capabilities include generate unity c# model from game config json and json to c# dto with dataannotations validation.
Overview
The JSON → C# Class generator turns sample JSON into C# entity classes, supporting auto-property syntax and optional
How to Use This Tool
Step 1 — enter sample JSON on the left or click "Sample" to load a preset payload. Step 2 — fill in the namespace (for example
MyApp.Models) and the root class name (default RootObject). Step 3 — choose whether to use auto-property syntax (recommended) and whether to add [JsonProperty] for precise control over serialized names. Step 4 — the right editor updates the C# code in real time; copy it or download as a .cs file. Nested JSON objects are split into multiple classes automatically and array elements are merged.Common Use Cases
ASP.NET Core Web API developers create request / response models from agreed contracts; Unity game projects quickly generate config or protocol classes when talking to a back-end; desktop clients (WPF / WinForms) need strongly-typed models after fetching REST data; grabbing samples from Swagger / OpenAPI docs for batch import; converting configuration JSON shapes into Options classes to work with the IOptions<T> pattern.
Technical Details
Strings map to
string, integers to int, floats to double, booleans to bool, arrays to List<T>, and mixed-type or null values become object. Class names are PascalCased and property names follow C# conventions. To use [JsonProperty], import using Newtonsoft.Json; or the equivalent System.Text.Json annotation [JsonPropertyName]. Generated code defaults to 4-space indentation and can be switched to 2.Privacy & Security
The whole class-generation process happens locally in your browser. The JSON you enter is never uploaded, so you can use it safely for entity modelling of internal business APIs.