小编not*_*ted的帖子

我的WebApiConfig:

 public static class WebApiConfig
    {
        public static void Register(HttpConfiguration config)
        {
            // Web API configuration and services

            // Web API routes
            config.MapHttpAttributeRoutes();


            ODataModelBuilder builder = new ODataConventionModelBuilder();
            builder.EntitySet<Applicant>("Applicants");
            builder.EntitySet<Country>("Countries");
            builder.EntitySet<Program>("Programs");
            builder.EntitySet<Campus>("Campuses");
            builder.EntitySet<AcademicYear>("AcademicYears");
            builder.EntitySet<Citizenship>("Citizenships");
            builder.EntitySet<ProgramChoice>("ProgramChoices");
            builder.EntitySet<Application>("Applications");
            builder.EntitySet<ProvinceState>("States");

            config.MapODataServiceRoute(
              routeName: "ODataRoute",
              routePrefix: null,
              model: builder.GetEdmModel());




            config.Routes.MapHttpRoute(
                name: "DefaultApi",
                routeTemplate: "api/{controller}/{key}",
                defaults: new { key = RouteParameter.Optional }
            );
        }
    }

我的控制器获取方法返回项目列表:

   [EnableQuery]
        public IQueryable<ProvinceState> Get()
        {
            return db.ProvinceStates;
        }

我的控制器获取方法返回单个项目:

[EnableQuery]
public SingleResult<ProvinceState> Get([FromODataUri] string key)
{
    IQueryable<ProvinceState> result = db.ProvinceStates.Where(c …