About JSON to C# Class Generator
JSON to C# Class Generator is an efficient developer tool that converts JSON data to C# entity classes. In .NET development, JSON deserialization is common - manually writing corresponding C# classes is tedious and error-prone. This tool automatically analyzes JSON structure and generates accurate C# class definitions.
Features
- Automatic type inference: Selects correct C# types based on JSON values
- Nested object support: Auto-generates nested classes
- Array handling: Maps arrays to List<T>
- JsonProperty attributes: Optional, preserves JSON field naming
- High-quality output: Follows C# conventions, production-ready
Frequently Asked Questions
How high quality are the generated C# classes?
Generated code follows C# conventions: 1) Proper namespace and class definitions; 2) Automatic type inference (int, double, string, bool, DateTime, List, Dictionary); 3) JsonProperty attributes (Newtonsoft.Json compatible); 4) Nullable value types support; 5) Automatic nested class generation. Ready for Visual Studio.
What JSON structures are supported?
All common structures: 1) Simple objects (flat JSON); 2) Nested objects; 3) Arrays (object arrays and primitive arrays); 4) Mixed structures; 5) Optional fields (auto-handles different types at same position). Handles deeply nested JSON correctly.
How is type inference done?
Type inference rules: integers without decimals→int/float, with decimals→double, strings→string, booleans→bool, objects→nested class, arrays→List, null→nullable types. For mixed types, the more general type is preferred.
Does it support JsonProperty attributes?
Yes. The generator adds [JsonProperty("originalName")] to each property for proper deserialization. This preserves original JSON naming (e.g., snake_case) while C# properties use PascalCase convention.
Does the generated code work with .NET Framework and .NET Core?
Yes. Generated code is compatible with .NET Framework 4.5+ and all modern .NET (Core/5/6/7/8/9). Uses standard System.Collections.Generic and Newtonsoft.Json attributes. For System.Text.Json compatibility, enable the 'Use System.Text.Json' option.