JSON to Language Struct / Class Generator
About JSON → C# Class
The JSON to C# Class & Record Generator converts JSON payloads into type-safe C# models, C# 9+ `record` types, and POCO classes with `System.Text.Json` (`[JsonPropertyName]`) and `Newtonsoft.Json` (`[JsonProperty]`) attributes for .NET applications.
How to Use JSON → C# Class
Step 1
Paste your JSON payload into the editor.
Step 2
Select C# model type (Record or Class) and JSON serializer library.
Step 3
Specify root class name (e.g. `UserModel`).
Step 4
Click "Copy C# Code".
Practical Use Cases for JSON → C# Class
ASP.NET Core Web API Model & DTO Generation
Convert JSON schemas into C# records and DTOs for ASP.NET Core controllers, Entity Framework, and Blazor apps.
Unity Game Development Data Serialization
Generate C# classes with `[Serializable]` attributes for Unity JSON utility deserialization.
Input & Output Examples
Converting JSON to C# Record
`{ "user_id": 100, "email": "user@example.com", "verified": true }``public record User(\n [property: JsonPropertyName("user_id")] long UserId,\n [property: JsonPropertyName("email")] string Email,\n [property: JsonPropertyName("verified")] bool Verified\n);`Key Features & Performance
- ✓Output formats: Modern C# 9+ `record`, C# Class with auto-properties (`{ get; set; }`), or Positional Record.
- ✓Annotation libraries: `System.Text.Json` (`[JsonPropertyName]`), `Newtonsoft.Json` (`[JsonProperty]`), or Unity `[Serializable]`.
- ✓Supports nullable reference types (`string?`) and PascalCase property conventions.
- ✓100% Client-Side memory execution.
- ✓1-Click Copy C# code.
Key Terminology & Definitions
C# Positional Record
A concise C# record declaration providing init-only properties and a positional constructor with built-in value-based equality.
`System.Text.Json`
The high-performance, low-allocation official JSON library built into modern .NET Core / .NET 6+.