Jquery EasyUI treegrid的使用（asp.net后台）

废话不多说，先看效果图

一、引入文件

    <link href="~/Content/jquery-easyui-1.5.2/themes/default/easyui.css" rel="stylesheet" />
    <link href="~/Content/jquery-easyui-1.5.2/themes/icon.css" rel="stylesheet" />
    <script src="~/Content/jquery-easyui-1.5.2/jquery.min.js"></script>
    <script src="~/Content/jquery-easyui-1.5.2/jquery.easyui.min.js"></script>
    <script src="~/Content/jquery-easyui-1.5.2/locale/easyui-lang-zh_CN.js"></script>

二、界面布局

<h1>TreeGrid</h1>
<div class="panel datagrid">
     <table id="tg"></table>
</div>

三、后台控制器

  public class HomeController : Controller
    {
        [Dependency]
        public GradeBLL gradeBLL { get; set; }
        [Dependency]
        public ClassBLL classBLl { get; set; }
        [Dependency]
        public StudentBLL studentBLL { get; set; }
        // GET: Home
        public ActionResult Index()
        {
            return View();
        }

        [HttpGet]
        public JsonResult GetJsonTree(string Id)
        {
            HttpResponeResult httpResult = new HttpResponeResult();
            try
            {
                List<TreeModel> list = new List<TreeModel>();

                //首次加载
                if (string.IsNullOrEmpty(Id))
                {
                    var gradeList = gradeBLL.GetAllGradeList();
                    //转换为节点树列表
                    foreach (var grade in gradeList)
                    {
                       
                        TreeModel node = new TreeModel
                        {
                            Id = grade.Id.ToString(),
                          //  Code ="",
                            state = "closed",
                            iconCls = "icon-server",
                            Text = grade.GradeName
                        };
                     
                        node.CreateTime = grade.CreatTime;

                        list.Add(node);
                    }
                    return Json(list, JsonRequestBehavior.AllowGet);
                }

                string[] idList = Id.Split('-');

                //获取该年级下的班级
                if (idList.Length == 1)
                {
                    var gradeId = idList[0];
                    var classList = classBLl.GetAllClassList(gradeId);//获取所有班级

                    foreach (var floor in classList)
                    {
                     
                        TreeModel node = new TreeModel
                        {
                            children = new List<TreeModel>(),
                            Id = gradeId + "-" + floor.Id.ToString(),         
                            state = "closed",
                            iconCls = "icon-drive",
                            Text = floor.ClassName
                        };                     
                        node.CreateTime = floor.CreatTime;
                        list.Add(node);
                    }
                }

                //获取班级下的学生
                if (idList.Length == 2)
                {
                    var gradeId = idList[0];
                    var floorId = idList[1];
                    int i = 0;
                    var studentList = studentBLL.GetAllStudentList(gradeId, floorId);
                    foreach (var student in studentList)
                    {
                        TreeModel node = new TreeModel
                        {
                            children = new List<TreeModel>(),
                            Id = gradeId + "-" + floorId + "-" + student.Id.ToString() + "-" + i,
                            state = "open",
                            iconCls = "icon-group",
                            Text = student.Name,
                          
                        };

                        list.Add(node);
                        i++;
                    }
                }

                return Json(list, JsonRequestBehavior.AllowGet);
            }
            catch (Exception ex)
            {
                return Json(httpResult.HttpResultFailure("获取数据失败。原因", ex.Message), JsonRequestBehavior.AllowGet);
            }
        }

    }

四、BLL逻辑

  [Dependency]
     public GradeDAL gradeDAL { get; set; }

        public List<Grade> GetAllGradeList()
        {
            var mql = GradeSet.SelectAll();
            List<Grade> list = gradeDAL.GetEntities(mql);
            return list;
        }
//---------------------分割线--------------------------------------
       [Dependency]
        public ClassDAL classDAl { get; set; }

        public List<Class> GetAllClassList(string GradeId)
        {
            var mql = ClassSet.SelectAll().Where(ClassSet.GradeId.Equal(GradeId));
            List<Class> list = classDAl.GetEntities(mql);
            return list;
        }

//---------------------分割线--------------------------------------
  [Dependency]
        public StudentDAl studentDaL { get; set; }

        public List<Student> GetAllStudentList(string gradeId, string ClassId)
        {
            var mql = StudentSet.SelectAll().Where(StudentSet.GradeId.Equal(gradeId).And(StudentSet.ClassId.Equal(ClassId)));
            List<Student> list = studentDaL.GetEntities(mql);
            return list;
        }

五、js部分

$(function () {
    $('#tg').treegrid({
        title: 'TreeGrid with Footer',
        iconCls: 'icon-ok',
         700,
        height: 400,     
        rownumbers: true,
        animate: true,
        collapsible: true,
        fitColumns: true,
        url: '/Home/GetJsonTree',
        method: 'get',
        idField: 'Id',
        treeField: 'Text',
        showFooter: true,
        onClickRow:onClickRow,
        columns: [[
           { title: '名称', field: 'Text',  160 },
           { title: '创建时间', field: 'CreateTime',  120 }
        ]]
    });
})

/*响应节点点击事件*/
function onClickRow(row) {
    $("#tg").treegrid('expand', row.Id);
}

 总结

树形网格之间存在父/子节点关系让我在写代码的时候纠结了很久，网上的Dome看了有点懵逼，但终归把效果实现了，作为一名小白不太会写博客，所有代码方面没有过多的介绍，有什么不对的地方，欢迎指教！！！！