在结果上使用List <>对象嵌套元素格式返回JSON

Question

我的列表对象是从dbcontext身份模型中提取的线性数据行。 问题是需要返回JSON结构，并将其值包装在嵌套参数中。 参见示例。 我该如何实现？ 子级中的数据不必是定义为单独的模型类，因为只需要以某种方式在接受javascript客户端库的结果中定义数据即可。

以下代码从控制器的JSON结果返回。

using (var dc = new EntitiesDB.CalendarEntities())
{
  var evt1 = (from e in dc.CalendarEvents(startDate, endDate)
             select new
              {
                 e.EventID,
                 e.Subject,
                 e.startDateRecur,
                 e.startTimeRecur,
         e.Ruletype,
         e.RuleValue                           
}).ToList();

   return Json(evt1.Select(v => new
   {
      id = v.EventID,
      title = v.Subject,
      startRecur = v.startDateRecur,                    
      startTime = v.startTimeRecur,
      ruleType = v.RuleType,
      ruleValue = v.RuleValue
   }), JsonRequestBehavior.AllowGet);

[{
"id":222044,
"title":"Sample Day Recur Event 1",
"startRecur":"1/1/2019",                    
"startTime":"00:12:00",
"ruleType":"Weekly",
"ruleValue" = "True"
},
{
"id":222045,
"title":"Sample Day Recur Event 2",
"startRecur":"1/1/2019",                    
"startTime":"00:15:00",
"ruleType":"Weekly",
"ruleValue" = "True"
}]

我如何使其返回结果，以便可以将某些值放入这样的结果中的嵌套元素“ rrule”中？

[{
"id":222044,
"title":"Sample Day Recur Event 1",
"startRecur":"1/1/2019",                    
"startTime":"00:12:00",
rrule: { 
         "ruleType":"Weekly",
         "ruleValue" = "True"
       }
},
{
"id":222045,
"title":"Sample Day Recur Event 2",
"startRecur":"1/1/2019",                    
"startTime":"00:15:00",
rrule: { 
         "ruleType":"Weekly",
         "ruleValue" = "True"
       }
}]

Answer 1

您rrule使用对象初始化程序语法为rrule设计新的类型，如下所示：

return Json(evt1.Select(v => new
   {
      id = v.EventID,
      title = v.Subject,
      startRecur = v.startDateRecur,                    
      startTime = v.startTimeRecur,
      rrule = new { 
          ruleType = v.RuleType,
          ruleValue = v.RuleValue
      }
   }