EasyUI Tree后台数据初始化（LINQ操作）

控制器：

 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         }

实体：

1     public class TestModel
2     {
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     }