kendo treeview checkbox初始化选中问题，没解决，暂时记录下

Posted 2021-01-23 taoshengyujiu

想做带有checkbox的tree，由于项目一直用kendo ui for mvc，感觉 牛逼的kendo肯定有tree。结果碰到了选中的问题。

无法根据后台传来的IsChecked字段来设置  tree的选中状态。暂时不知道原因。

后台 接口

  #region 地区 tree
        public JsonResult GetAreasTree(int? id)
        {
            //id = id.GetValueOrDefault();
            //List<Area> allAreas = _commonService.GetAreas().ToList();
            //List<int> allCheckedItemIds = _commonService.GetUserAreaIdNew(UserId());
            //allCheckedItemIds.Add(3);
            //allCheckedItemIds.Add(101);
            //var areaTreeData = GetChildren(allAreas, allCheckedItemIds,0);
            var areaTreeData = new List<KendoTreeModel>();
            areaTreeData.Add(new KendoTreeModel()
            {
                Id = 1,
                Name = "大陆",
                IsChecked = false,
                Expanded = false,
                Items = new List<KendoTreeModel>
                {
                    new KendoTreeModel()
                    {
                        Id = 11,
                        Name = "huabei",
                        IsChecked = true,
                        Expanded = false
                    },
                    new KendoTreeModel()
                    {
                        Id = 12,
                        Name = "huanan",
                        IsChecked = false,
                        Expanded = false
                    }
                }
            });
            return Json(areaTreeData, JsonRequestBehavior.AllowGet);
        }


        private List<KendoTreeModel> GetChildren(List<Area> allItems,List<int> allCheckedItemIds, int parentId)
        {
            List<KendoTreeModel> models = new List<KendoTreeModel>();
            var sonItems = allItems.FindAll(c => c.ParentId == parentId).OrderBy(c => c.SortNumber);
            foreach (var son in sonItems)
            {
                models.Add(new KendoTreeModel()
                {
                    Id = son.Id,
                    Name = son.Text,
                    Expanded = son.ParentId.GetValueOrDefault() != 1,
                    IsChecked = allCheckedItemIds.Contains(son.Id),
                    Items = GetChildren(allItems, allCheckedItemIds, son.Id)
                });
            }
            return models;
        }
        #endregion

　　

 public class KendoTreeModel
    {
        public int Id { set; get; }
        public int ParentId { set; get; }

        public string Name { set; get; }
        public bool IsChecked { set; get; }
        public bool Expanded { set; get; }
        public List<KendoTreeModel> Items { set; get; }
    }

前端 代码

<div id="treeview" class="demo-section"></div>

　　

 var homogeneous = new kendo.data.HierarchicalDataSource({
            transport : {
                read : {
                    url :  "@Url.Action("GetAreasTree", "CommonAjax")",
                    dataType : "json",
                    data: function() {
                        var id= 0;
                        return { id: id}
                    }
                }
            },
            schema : {
                model : {
                    id : "Id",
                    children:"Items",
                    expanded: "Expanded",
                    checked: "IsChecked"
                }
            }
        });
      
        $("#treeview").kendoTreeView({
            loadOnDemand : true,
            dataSource : homogeneous,
            dataTextField: "Name",
            checkboxes : {
                checkChildren: true
            }
        });