Force CamelCase on ASP.NET WebAPI Per Controller - asp.net

Question

In ASP.NET WebAPI, I know you can set the default json formatter to use camel case using CamelCasePropertyNamesContractResolver() in the global.aspx which will force ALL json serialization to camel case.
However, I need to be able to set it on a "Per Controller" instance, instead of a Global solution.
Is this possible?

Answer 1

Thanks to #KiranChalla I was able to achieve this easier than I thought.
Here is the pretty simple class I created:
using System;
using System.Linq;
using System.Web.Http.Controllers;
using System.Net.Http.Formatting;
using Newtonsoft.Json.Serialization;
public class CamelCaseControllerConfigAttribute : Attribute, IControllerConfiguration
{
public void Initialize(HttpControllerSettings controllerSettings, HttpControllerDescriptor controllerDescriptor)
{
var formatter = controllerSettings.Formatters.OfType<JsonMediaTypeFormatter>().Single();
controllerSettings.Formatters.Remove(formatter);
formatter = new JsonMediaTypeFormatter
{
SerializerSettings = {ContractResolver = new CamelCasePropertyNamesContractResolver()}
};
controllerSettings.Formatters.Add(formatter);
}
}
Then just add the attribute to any Controller class you want CamelCase.
[CamelCaseControllerConfig]

Answer 2

Yes, it's possible...you can use IControllerConfiguration to define per-controller specific configuration..
This is a sample which describes this scenario. You can quickly take a look at how this interface should be used over here(from the sample).

Answer 3

This Stack Overflow answer should be helpful. It shows you how to create an ActionFilter which can be applied to any action where you wish to use CamelCasing.

Answer 4

I know this is pretty old, but I had a problem with the accepted answer because there were other necessary changes to the formatter that were no longer present after removing and re-adding. I did this by just modifying the existing formatter as shown in this Gist: https://gist.github.com/mauricedb/5356933.