ToDictionary写法

把List集合转化成Dictionary

　　public ActionResult Dimo()
　　{ 
　　　　Dictionary<string, Object> param = new Dictionary<string, Object>();
 　　　 param.Add("UID", user.UID);
　　　　string urlUserPoints = RouteManager.GetApiRoute("User", "GetPointById", param);
　　　　List<UserPoints> userPoints = JsonConvert.DeserializeObject<UserPoints>(UserList.GetUser(urlUserPoints));

　　　　string urlGetIndustriesAndJobs = RouteManager.GetApiRoute("User", "GetIndustriesAndJobs");
　　　　Dictionary<string, Object> param2 = JsonConvert.DeserializeObject<Dictionary<string, Object>>(UserList.GetUser(urlGetIndustriesAndJobs));
　　　　List<CatalogForIndustries> catalogForIndustries = SerializeHelper.DeserializeFromJson<List<CatalogForIndustries>>(SerializeHelper.SerializeToJson(param2["catalogForIndustries"]));
　　　　//与第一个不同，第二个传来的是一个Dictionary，这个字典中包含两个集合，所以在反序列化后并无法直接转化成list集合，所以需要再序列化反序列化一次
　　　　Dictionary<string, List<CatalogForIndustries>> temp = catalogForIndustries.GroupBy(a => a.ParentID).ToDictionary(a => a.Key, a => a.ToList());   
　　　　//这个是ToDictionary的写法，把list转化成Dictionary 字典 
 　　　　this.ViewBag.catalogGroup = temp;
　　　　return view();
　　}


        [HttpGet]
        [SecurityCheck]
        public HttpResponseMessage GetIndustriesAndJobs(string guid)
        {
            List<CatalogForIndustries> industies = BllFactory.Instance.UserBLL.GetCatalogForIndustries();
            List<CatalogForJobs> jobs = BllFactory.Instance.UserBLL.GetCatalogForJobs();
            Dictionary<string,object> param = new Dictionary<string,object>();
            param.Add("catalogForIndustries", industies);
            param.Add("catalogForJobs", jobs);
            return ConvertHelper.toJson(param);
        }

 以上是个人经验和理解（有点生涩），写给自己看的，看得懂就用，看不懂不要pen