[C#-MVC] JSONAttribute

C# - JSON Result

public class JSONAttribute : ActionFilterAttribute
{
    public override void OnActionExecuted(ActionExecutedContext filterContext)
    {
        var result = new JsonResult();
        result.Data = ((ViewResult)filterContext.Result).Model;
        result.JsonRequestBehavior = JsonRequestBehavior.AllowGet;
 
        filterContext.Result = result;
    }
}

//TEST

[JSON]
public ActionResult GetJson()
{
     var data = new { x = 10, b = 20, c = 20 };
     return View(data);
}


//Result
{"x":10,"b":20,"c":20}