1  /// <summary> 2         /// 树初始化 3         /// </summary> 4         /// <returns></returns> 5         [HttpPost] 6         public ContentResult InitTree() 7         { 8             List<TestModel> items = bll.GetTreeFormList(); 9             Action<TestModel> SetChildren = null;10             //封装一个方法(递归)不断读取树的分支11             SetChildren = Parent =>12             {13                 Parent.Children = items.Where(childItem => childItem.ParentGuid == Parent.Guid).ToList();14                 Parent.Children.ForEach(SetChildren);15             };16             //初始化树列表17             List<TestModel> treeItems = items.Where(rootItem => rootItem.ParentGuid == "").ToList();18             treeItems.ForEach(SetChildren);19 20             string strJson = JsonConvert.SerializeObject(treeItems,21                 Formatting.Indented,22                 new JsonSerializerSettings()23                 {24                     NullValueHandling = NullValueHandling.Ignore,25                     ReferenceLoopHandling = ReferenceLoopHandling.Ignore,26                     Converters = new List<JsonConverter> { new IsoDateTimeConverter { DateTimeFormat = "yyyy-MM-dd HH:mm:ss" } }27                 }).Replace("Children", "children");28 29             return Content(strJson);30         }

1     public class TestModel2     {3         public string Guid { get; set; }4         public string Name { get; set; }5         public string Price { get; set; }6         public string ParentGuid { get; set; }7 8         public List<TestModel> Children { get; set; }9     }