JSON to C# Class

You are about to consume an API from .NET and you need the classes that System.Text.Json or Newtonsoft will fill in. It is mechanical work, and it is exactly where the expensive mistake slips through: a money value typed as an integer, a list left out entirely. Paste a sample payload and get back a class with auto implemented properties and nested objects already split into their own classes.

Types come from values: text becomes string, true or false becomes bool, a whole number becomes long, a decimal number becomes double, null becomes object, and an array becomes a List of the first element's type. The meaningful difference from the Java generator is naming: here properties are converted to PascalCase, so first_name becomes FirstName. That matches C# convention but breaks deserialisation against snake_case JSON unless you configure something.

Before this goes into your project: if the field is money, swap double for decimal, because double rounds in binary and you do not want that on an invoice. Nullability is not annotated, so add the question mark wherever the contract allows null. Two keys with the same name at different points in the JSON produce a single class, whichever came first. An empty array becomes a List of object for lack of a sample. Conversion happens in your browser.