Creating API models in .NET with PascalCase property names but serializing to CamelCase

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I usually use a variety of text manipulation tools to extract a list of properties from some REST API documentation, and then use Newtonsoft.Json to add an annotation above the field in order to tell the program whilst this property may be called "DeliveryAddress" when we serialize to JSON please call it "deliveryAddress" using

[JsonProperty(PropertyName = "deliveryAddress")]
public string DeliveryAddress{ get; set; }

It seems a bit long winded so I was wondering if there was an easier way, or some feature in VS I could use to make a 'macro' of sorts to apply this annotation to a list of PascalCase properties.

Well that was easy, turns out I've been cluttering my code unnecessarily all this time. Hopefully this will serve as a useful question for others in my position.

There is another class level annotation that can be used here.

[JsonObject(NamingStrategyType = typeof(CamelCaseNamingStrategy))]
public class Order
    public string DeliveryAddress {get;set;}
    public string FirstName {get;set;}
    [JsonProperty(NamingStrategyType = typeof(SnakeCaseNamingStrategy))]
    public string NewlyAddedProperty {get;set;}

This will apply the CamelCasing upon serialization to all properties, and this can be overridden at an inline annotation level as shown above.

What a lovely library.

Serializing a PascalCase Newtonsoft.Json JObject to camelCase, NET JObject, and show how to get camelCase names from a PascalCase JObject. when serializing a JObject that stored its property names in PascalCase. LINQ to JSON provides a convenient API to query the data, and we get some This creates a clone of the object, but using camelCase properties. MyVariable <- PascalCase myVariable <- camelCase. In earlier versions of Web API and indeed early versions of core, the default serialization of an object to JSON results in Pascalcase names. When a C# app is talking to another C# app, the casing actually doesn’t matter.

You can manually build a serializer with a case converter:

var jsonSerializersettings = new JsonSerializerSettings
    ContractResolver = new CamelCasePropertyNamesContractResolver()

var myJsonOutput = JsonConvert.DeserializeObject<object>myJsonInput.ToString(),jsonSerializersettings);

Pascalcase vs Camelcase in Core, It's not like the war of Pascalcase vs Camelcase hasn't been going on for a very long time, but in core it flared up again with a of core, the default serialization of an object to JSON results in Pascalcase names. Not have properties that came from your API suddenly be in Pascal Case. Some time ago I wrote a three part article on creating and consuming Web API in ASP.NET Core. You can read them here - Part 1, Part 2, Part 3. If you worked with that example you must have noticed that while serializing data to the client, the ASP.NET Core Web API uses camel casing.

Property names serialize to camelCase by default in core.

If for some reason this is not the case or you need to customize it further, the naming strategy can manually be specified by setting the NamingStrategy in the JSON serializer settings:

services.AddMvc().AddJsonOptions(options =>
  var resolver = options.SerializerSettings.ContractResolver as DefaultContractResolver;
  resolver.NamingStrategy = new CamelCaseNamingStrategy();

Then any time you return an object from an API, it will be serialized with camel case names.

If you're manually serializing the JSON to a string, you can inject IOptions<MvcJsonOptions> to access the default serializer settings which MVC uses:

var jsonString = JsonConvert.SerializeObject(obj, options.Value.SerializerSettings);

Dynamic property in typed object not serialized to camelCase JSON , Describe the bug When calling an API that returns a typed object that holds to host and review code, manage projects, and build software together. The view model will follow Camel Case, but the dynamic property serializing-a-pascalcase-newtonsoft-json-jobject-to-camelcase/ I´m using a WebAPI in server with WPF in client app, but I´m having trouble, ’cause WPF sends data in PascalCase, and WebAPI don´t understand it cause it´s camelCase. My WebApi will be used for other apps that sends data with camelCase too, that´s ok.

ASP.NET Core MVC JSON Output in camelCase or PascalCase , Create a custom Output Formatter for ASP.NET NET Web API to ASP.NET Core , that the default case for serializing output to JSON is now camelCase. is to specify an accept header of application/json but with an profile. ASP.NET Core MVC JSON Output in camelCase or PascalCase July 6, 2017 July 6, 2017 Derek Comartin .NET , ASP.NET Core You may have noticed if you have migrated from ASP.NET Web API to ASP.NET Core, that the default case for serializing output to JSON is now camelCase.

Serialize .NET objects as camelCase JSON, NET POCO to JSON and the other way around using the model binder. But one thing I really don't like is how serializing .NET objects to JSON returns the properties PascalCase. you would create a JsonSerializerSettings, Serialize the object with JsonConvert and return the { "name": "Rambo", "age": 5 }. In the older versions of Web API, the default serialization property was in PascalCase. When we are working with .NET based applications, the casing doesn’t matter. But when the API is consumed by another application, such as Angular JS or any other application, then most of the cases are CamelCase as per the JavaScript standard.

Automatically bind pascal case c# model from , deserialize camelcase to pascalcase return json with lower case first letter of property names asp net core web api json serialization settings If you want to apply the snake casing to some classes but not others, you can do this All you have to do is bind to the View Model that is created through JavaScript. Add 4 different naming conventions for Typescript model's property original camelCase (default) PascalCase snake_case