asp.net core 1.0 web api use camelcase

Question

On RC2 the same code returns json format with camel case. After netcore 1.0 release i started new project and the same code is returning json in lowercase.

Tried multiple solutions but none of them were working web-api-serialize-properties-starting-from-lowercase-letter

Answer 1

services
    .AddMvc()
    .AddJsonOptions(options =>
    {
        options.SerializerSettings.ContractResolver
            = new Newtonsoft.Json.Serialization.DefaultContractResolver();
    });

This keeps a JSON object's name the same as .NET class property.

Answer 2

You can configure JSON behavior this way:

public void ConfigureServices(IServiceCollection services)  
  {
      services.AddMvc()
                  .AddJsonOptions(options =>
                  {
                      options.SerializerSettings.ContractResolver =
                          new CamelCasePropertyNamesContractResolver();
                  });
  }

Answer 3

You can also do this at the individual serializer level, instead of at the global level.

For example, to return an object as JSON on a controller action method you can do this:

var jsonSerializerSettings = new JsonSerializerSettings { ContractResolver = new DefaultContractResolver() };

return new JsonResult(myObject, jsonSerializerSettings);

And the resulting JSON string will be in the expected PascalCase to match the .NET class/properties names