kendo ui treelist popup 模式下实现下拉框控件形式展示

1、在列后面增加editor和template属性，其中levelDropDownEditor是一个方法，LvDisplayName是下拉框的Text值的字段名(用于在列表里显示)

columns: [
    { field: "Name", expandable: true, title: "名称", width: 250 },
    { field: "Code", title: "编号" },
    { field: "Lv", title: "级别", width: "180px", editor: levelDropDownEditor, template: "#=LvDisplayName#" }
]

2、实现levelDropDownEditor方法，其中的DropdownlistValue，是我加上的特殊标识，用于后台的数据读取，因为后台自定了一个字段名叫："LvDropdownlistValue"。

    function levelDropDownEditor(container, options) {
        var jqueryElement = $('<input required name="' + options.field + 'DropdownlistValue" />');
        jqueryElement
            .appendTo(container)
            .kendoDropDownList({
                autoBind: true,
                dataTextField: "DisplayCode",
                dataValueField: "ParaCode",
                dataSource: {
                    transport: {
                        read: {
                            dataType: "jsonp",
                            url: "@Url.Content("~/BaseInfoManagement/Department/GetDepartmentLevelList")",
                        }
                    }
                },
                value: options.model.Lv,
                dataBound: onDataBound
            });
    }

3、后台update方法的实现

public JsonResult Update()
        {
            dvaContext context = new dvaContext();
            JsonResult json = new JsonResult();
            var tempObj = new Cust_department_info();
            if (ModelState.IsValid)
            {
                string jsonData = this.Request["models"];
                List<Cust_department_info> lst = JsonConvert.DeserializeObject<List<Cust_department_info>>(jsonData);
                foreach (var obj in lst)
                {
                    var objNew = context.department_info.Find(obj.ID);
                    List<department_info> children = context.department_info.Where(m => m.ParentCode == objNew.Code).ToList();
                    objNew.Name = obj.Name;
                    objNew.Code = obj.Code;
                    objNew.Lv = obj.LvDropdownlistValue.ParaCode;
                    foreach (var b in children)
                    {
                        b.ParentCode = objNew.Code;
                    }
                }
                context.SaveChanges();
            }
            json.Data = new { success = true, msg = "更新成功！" };
            return json;
        }