从实体框架缩进JSON

在过去的几天里,我一直在尝试阅读和测试各种方法,以获取实体框架中实体中的属性(列),并从中检索平均值,然后将其传递给JSON。我曾经接近过几次,但总是失败。最后,当我有JSON时,我想以缩进格式返回它,以便在JQuery可视化库中使用。

我的控制器在这里:

    public virtual JsonResult GetData()
    {
        var result = new FactSurveryResultsQueries().GetAverages();
        return new JsonResult { JsonRequestBehavior = JsonRequestBehavior.AllowGet, Data = result };
    }

这是我的视图模型:

namespace Provider.Models
{
    public class FactSurveyResultsViewModel //: BaseGraphViewModel
    {
        public FactSurveyResultsViewModel() { }
        //public List<KPIUserControl> customerSatisfactionChart = new List<KPIUserControl>();
        ////public List<string> customerSatisfactionChart = new List<string>();
        //public Dictionary<string, decimal> a { get; set; }
        public double? EaseRequestingHelp { get; set; }
        public double? TimeReachQualifiedTech { get; set; }
        public double? TimeProvideSolution { get; set; }
        public double? CompletenessOfSolution { get; set; }
        public double? TechAbilityProdKnowledge { get; set; }
        public double? HowWellKeptInformed { get; set; }
        public double? OverallServiceOpinion { get; set; }

    }
}

最后,这是我当前的迭代,只检索一个属性并对其进行平均,尽管它当前为空。

namespace Provider.Queries
{
    public class FactSurveryResultsQueries
    {
        public FactSurveyResultsViewModel GetAverages()
        {
            var result = new FactSurveyResultsViewModel();
            using (var db = new ATSNavigatorDBEntities())
            {
                var thing =
                    from p in db.Fact_SurveyResults
                    group p by 1 into a
                    select new FactSurveyResultsViewModel { EaseRequestingHelp = a.Average(p.EaseRequestingHelp)};
            }
            return result;
        }
    }
}

有人能告诉我检索一个属性,并将其作为缩进的JSON从我的控制器中访问,这样我就可以使用它,然后我可以将其复制到其他属性中吗?谢谢