基于jQuery+ashx+.net实现三级栏目联动操作

父级ID可以为空以两个编号为一级 可以添加到第四级

table 字段有ID、 name 、parentNode、 childNode等基本属性  selecet  parentNode  ,len(childNode)/2 as level,...... from table

<table id="tableList">  </table> id列表显示属性HTML省略

html:

<div id="dialog-form" title="新增|修改" style="display: none;">
        <p class="validateTips">
        </p>
        <label for="parentNode" style="float: left">
            父级栏目：</label>
        <select id="SelectNode" style="height: 22px">
            <option value="-1">请选择</option>
        </select>
        <select id="SelectNode2" style="height: 22px">
            <option value="-1">请选择</option>
        </select>
        <select id="SelectNode3" style="height: 22px">
            <option value="-1">请选择</option>
        </select><p>
        </p>
        <p>
        </p>

        <label for="nodecode" style="float: left">
            栏目编号：</label>
        <input type="text" name="nodecode1" id="nodecode1" style="width: 72px; background-color: #cacaca;"
            maxlength="2" readonly="readonly" />
        <%--一级栏目编号--%>
        <input type="text"   name="nodecode2" id="nodecode2" style="width: 72px;" maxlength="2"
            onkeyup="lengthLimit(this)"    />
        <%--二级栏目编号--%>
        <p>
        </p>
        <label for="menuName" style="float: left">
            栏目名称：</label>
        <input type="text" name="menuName" id="menuName"   maxlength="20" onkeyup="checkNull(this)" style="width: 

200px" /><p>
        </p>
       <label for="icoUrl" style="float: left">
            栏目图标：</label>
        <div>
            <div id="J_imageView" style="margin-left: 50px">
                <img alt="" id="img_rs_stu" style="width: 32px; height: 32px" src="" />
            </div>
            <div style="margin-left: 70px; margin-top: 5px; border-bottom: 5px">
                <input type="button" id="uploadButton" value="上传" style="height: 50px; width: 110px;
                    float: left;" />
            </div>
        </div>
        <p>
        </p>
    </div>

<div class="ctent">
            <input type="button" id="create-menu" value="新增栏目" />
        </div>

js:

js
<script type="text/javascript">

           var iType = 0;

             //新增栏目操作
            $("#create-menu").button().click(function () {
                BindChange();
                IniteDropDown([]);
                tag = "add";
                $("#dialog-form").dialog("open");
                $.post("/ashx/menusHandler.ashx", { fun: 'getMaxNum', type: iType }, function (data, status) {
                    $('#num').attr("disabled", "disabled")
                    $("#num").val(data);
                });
            });
        });
        //初始化下拉框
        function IniteDropDown(c) {
            //清除
            $("#SelectNode > option[value!='-1']").remove();
            $("#SelectNode2 > option[value!='-1']").remove();
            $("#SelectNode3 > option[value!='-1']").remove();
            //加载下拉框数据 一级二级三级栏目联动
            IniteSelect({
                ids: ['SelectNode', 'SelectNode2', 'SelectNode3'],
                swType: ['GetCloumn', 'GetCloumn', 'GetCloumn'], BaseUrl: '/ashx/DropDownControl.ashx?aktype=' + 

iType,
                callBack: c
            });
        }
  //栏目下拉选择节点名称值赋给文本框 获取 父节点的栏目名称编号
        //change 选项注册事件 根据下拉后赋值给控件
        function BindChange() {
            $("#SelectNode").change(function () { //当第一个下拉列表变动内容时第二个下拉列表将会显示
                var temp = $(this).val();
                if (temp == '-1') temp = ''; //选项为-1时 文本值为空
                $("#nodecode1").val(temp)//当第一个下拉列表变动内容时栏目编号显示父级编号
            }
            );
            //二级下拉框事件
            $("#SelectNode2").change(function () {
                var temp = $(this).val();
                if (temp == '-1') temp = $('#SelectNode').val();//显示父节点编号
                if (temp == '-1') temp = ''; //文本值编号为空
                $("#nodecode1").val(temp)

            }
          );
            //三级下拉框事件
            $("#SelectNode3").change(function () {
                var temp = $(this).val();
                if (temp == '-1') temp = $('#SelectNode2').val();
                if (temp == '-1') temp = $('#SelectNode').val();
                if (temp == '-1') temp = '';
                $("#nodecode1").val(temp)
            }
          );
        }

         //初始化加载数据获取列表信息
        function GetData() {
            InitPager({
                PageId: "#paging",
                Url: "/ashx/menusHandler.ashx",
                Options: { fun: "list", type: iType },
                CallBack: function (result) {
                    $('#tbody').html('');
                    $("#menuDemo").tmpl(result.Rows).appendTo("#tbody");
                    return result.Total;
                }
            });
        }

        var tag, strGuid;
        var aaa = false;
        var imgurl = "";

     $(function () {

            GetData();

            $("#dialog-form").dialog({
                autoOpen: false,
                bgiframe: true,
                height: 400,
                width: 400,
                modal: true,
                buttons: {
                    "保 存": function () {
                        var bValid = true;

                        var nodecode1 = $("#nodecode1").val(); //栏目一级编号
                        var nodecode2 = $("#nodecode2").val(); //栏目二级编号
                        var childnode = nodecode1 + nodecode2;  //子节点

                        var menuname = $("#menuName").val();
                        var icoUrl = imgurl;
                        if (nodecode2=='' || nodecode2.length < 2) {
                            bValid = false;
                            updateTips("编号不能为空且长度不能小于两位！");

                        }
                        if (menuname =='') {
                            bValid = false;
                            updateTips("栏目名称必填！");
                        }

                        if (bValid) {
                            $.post('/ashx/menusHandler.ashx', { fun: 'save', nodecode1: nodecode1, menuname: 

menuname, icoUrl: imgurl, type: iType, tag: tag, guid: strGuid, childnode: childnode }, function (status) {
                                if (status == "OK") {
                                    ReflashPager();
                                    alertmessage("操作提示", "信息保存成功！", null);
                                }
                                else {
                                    alertmessage("保存失败！编号不能与已存在编号相同!");
                                }
                            });
                            $(this).dialog("close");
                        }
                    },
                    "取 消": function () {
                        $(this).dialog("close");
                    }
                },
                open: function (event, ui) {
                    //文件上传
                    if (!aaa) {
                        var K = KindEditor;
                        var uploadbutton = K.uploadbutton({
                            button: K('#uploadButton')[0],
                            fieldName: 'imgFile',
                            url: '/ashx/FileUploadHandler.ashx?filetype=logo',
                            afterUpload: function (data) {
                                if (data.error === 0) {
                                    var url = K.formatUrl(data.url, 'absolute');
                                    var div = K('#J_imageView');
                                    div.html('');
                                    div.append('<img src="' + url + '" style="width: 32px; height: 32px;"/>');
                                    K('#url1').val(url);
                                    imgurl = url;
                                } else {
                                    alert(data.message);
                                }
                            },
                            afterError: function (str) {
                                alert('自定义错误信息: ' + str);
                            }
                        });
                        uploadbutton.fileBox.change(function (e) {
                            uploadbutton.submit();
                        });
                        aaa = true;
                    }
                },
                close: function () {
                    $("#nodecode1").val('');
                    $("#nodecode2").val('');
                    $("#menuName").val('');

                    $("#img_rs_stu").attr('src', '');
                    $("#nodecode").removeAttr("disabled").css('background', '');
                    RemoveChange();
                }
            });

</script>

DropDownControl.ashx 代码：

 /// <summary>
        /// 获取栏目下拉
        /// </summary>
        /// <param name="form"></param>
        public void GetCloumn(NameValueCollection form)
        {
            //此处查询节点
            var pcode = form["guid"];

            var aktype = HttpContext.Current.Request.QueryString["aktype"];
            ak_menus bll = new ak_menus();
            var tb = bll.GetMenus(pcode, aktype); //根据传递参数 获取数据信息操作了

            SerializeResponse(tb,"name");
        }

    }

     public static void SerializeResponse(DataTable tb, string name)
        {
            List<DropDown> list = new List<DropDown>();

            foreach (DataRow row in tb.Rows)
            {
                DropDown at = new DropDown();
                at.Value = row["guid"].ToString();
                if (string.IsNullOrEmpty(name))
                {
                    at.Text = row[name].ToString();
                }
                else
                {

                }
                list.Add(at);
            }
            AshxHelper.Write(list);
        }

FileUploadHandler.ashx 代码：

public override void ProcessRequest(HttpContext context)
        {
            context.Response.ContentType = "text/plain";
            if (ValidateUser())
            {
                try
                {
                    //文件所在文件夹路径:每次相关的文章或者广告名，附加路径
                    var filedir = context.Request.QueryString["filedir"];

                    //上传类别，根据类别获取配置文件
                    var filetype = context.Request.QueryString["filetype"];

                    string configUrl = XiuxiuUploadHelper.GetConfigURl(filetype);
                    if (context.Request.Files.Count > )
                    {
                        HttpPostedFile UploadFile = context.Request.Files["imgFile"];
                        UploadFile = (UploadFile == null) ? context.Request.Files["mediaFile"] : UploadFile;

                        if (UploadFile != null)
                        {
                            //定义允许上传的文件扩展名
                            ArrayList exts = new ArrayList() { "image", "flash", "media", "file" };

                            //上传图片:上传文件后返回上传结果
                            string dirName = context.Request.QueryString["dir"];
                            if (string.IsNullOrEmpty(dirName))
                            {
                                dirName = "image";
                            }

                            if (!exts.Contains(dirName))
                            {
                                //不允许的上传类型
                                showError(context, "不允许的上传的文件类型.");
                            }

                            //执行文件上传构造函数
                            Ak_UploadHelper FupdHelper = new Ak_UploadHelper(context.Request.Files[], configUrl, filedir);

                            //执行文件上传
                            string FileURLOfServer = FupdHelper.UploadFileFromHtpostfile();
                            if (!string.IsNullOrEmpty(FileURLOfServer) && FileURLOfServer.Equals(Ak_UploadHelper.UpLoadResult.SUCCESS.ToString()))
                            {
                                Hashtable hash = new Hashtable();
                                hash["error"] = ;
                                hash["url"] = FupdHelper.CustomUploadPath;
                                context.Response.AddHeader("Content-Type", "text/html; charset=UTF-8");
                                AshxHelper.Write(hash);
                            }
                            else
                            {
                                showError(context, FileURLOfServer);
                            }
                        }
                    }
                    else
                    {

                        //保存秀秀上传图片 主要是头像
                        var result = XiuxiuUploadHelper.SaveXiuxiuPhoto(context, configUrl, filedir);
                        AshxHelper.Write(result);
                    }

                }
                catch (Exception e)
                {
                    throw new Exception("上传文件失败！" + e);
                }

            }
            else
            {
                throw new Exception("当前用户无操作权限！");
            }

        }

     private void showError(HttpContext context, string message)
        {
            Hashtable hash = new Hashtable();
            hash["error"] = ;
            string UploadRsZh_CN = Ak_UploadHelper.GetUploadRsOfZh_CN(message);
            hash["message"] = UploadRsZh_CN;
            context.Response.AddHeader("Content-Type", "text/html; charset=UTF-8");
            AshxHelper.Write(hash);
        }
     }

menusHandler.ashx 代码：

public override void ProcessRequest(HttpContext context)
        {
            context.Response.ContentType = "text/plain";

            if (ValidateUser())
            {
                StringBuilder strBuilder = new System.Text.StringBuilder();
                string strFun = context.Request.Form["fun"];
                switch (strFun)
                {

                    case "save":
                        string strNodeCode = context.Request.Form["nodecode1"];
                        string strMenuName = context.Request.Form["menuname"];
                        string strUrl = context.Request.Form["menuurl"];
                        string strType = context.Request.Form["type"];
                        string strIco = context.Request.Form["icoUrl"];
                        string tag = context.Request.Form["tag"];

                        string strChildNode = context.Request.Form["childnode"];//子节点

                        if (string.IsNullOrWhiteSpace(strMenuName) && strChildNode == null || strChildNode.Length < )
                        {
                            AshxHelper.Write(false);
                            break;
                        }
                        var result = false;
                        if (tag == "add") //添加
                        {   //判断名称是否为空

                            result = addMenu(strNodeCode, strMenuName, strUrl, strType, strIco, num, strChildNode, ispopular);

                        }
                        else
                        {     //修改
                            string strguid = context.Request.Form["guid"];
                            result = editMenu(strNodeCode, strMenuName, strUrl, strType, strIco, num, ispopular, strguid, strChildNode);

                        }
                        AshxHelper.Write(result);
                        break;
                    case "set":  //列表框信息设置
                        string strGuid = context.Request.Form["guid"];
                        string strState = context.Request.Form["akState"];
                        if (setState(strGuid, strState))
                            strBuilder.Append("success");
                        else
                            strBuilder.Append("error");
                        context.Response.Write(strBuilder);
                        break;
                    case "model"://编辑修改操作获取信息
                        string guid = context.Request.Form["guid"];
                        context.Response.Write(getModel(guid));
                        break;
                    case "list"://获取列表信息初始加载数据
                        GetList(context.Request.Form);
                        break;
                    case "getMaxNum":// 根据类型获取最大序列号值
                        getMaxNum(context.Request.Form);
                        break;
                }
            }
            else
            {
                throw new Exception("当前用户无操作权限！");
            }
        }

        /// <summary>
        /// 根据类型获取最大序列号值
        /// </summary>
        /// <param name="form"></param>
        void getMaxNum(NameValueCollection form)
        {
            int type = Convert.ToInt32(form["type"].ToString());
            int num = bll.getMaxNum(type);  //数据操作查询方法

            AshxHelper.Write(num);

        }

       /// <summary>
        /// 获取数据列表信息
        /// </summary>
        /// <param name="form"></param>
        void GetList(NameValueCollection form)
        {
            var type = form["type"];
            var pageIndex = form["pageIndex"];
            var pageSize = form["pageSize"];

            var table = base.GetPagination("guid,lcon,name,url,akState,num,Lev",
                "v_menus", "nodecode", out DoCount, string.Format("AND aktype = '{0}' ", AnkeEdu.Tools.SqlEncodeHelper.EncodeSqlParam(type)));

            AshxHelper.Write(new { Total = DoCount, Rows = table });

        }

       /// <summary>
        /// 添加栏目
        /// </summary>
        /// <param name="strNode"></param>
        /// <param name="strName"></param>
        /// <param name="strUrl"></param>
        /// <returns></returns>
        private bool addMenu(string strNode, string strName, string strType, string strIco,  string strChildNode)//添加子节点strChildNode
        {
            //检测是否重复
            if (!bll.IsRepeat(new Guid(), strChildNode))
            {
                AnkeEdu.Model.ak_menus model = new AnkeEdu.Model.ak_menus();
                model.guid = AnkeEdu.Tools.NewId.NewUpGuid();
                model.akState = ;
                model.aktype = Convert.ToInt32(strType);
                model.name = strName;

                model.lcon = strIco;
                model.addTime = DateTime.Now;
                model.NodeCode = strChildNode;//赋值子节点
                model.ParentNode = strNode;
                return bll.Add(model); //添加操作数据信息
            }
            return false;
        }

        /// <summary>
        /// 编辑修改
        /// </summary>
        /// <param name="strNode"></param>
        /// <param name="strName"></param>
        /// <param name="strIco"></param>

        /// <param name="guid"></param>
        /// <returns></returns>
        private bool editMenu(string strNode, string strName,  string strType, string strIco,  string guid,string strChildNode)
        {

            var g = new Guid(guid);
            if (!bll.IsRepeat(g, strChildNode)) //检测是否重复
            {
                Model.ak_menus model = new Model.ak_menus();
                model = bll.GetModel(g);//根据ID获得实体信息
                model.aktype = Convert.ToInt32(strType);
                model.name = strName;
                model.lcon = strIco;
                model.ParentNode = strNode;

                model.NodeCode = strChildNode;

                return bll.Update(model); //数据更新操作
            }
            return false;
        }
       /// <summary>
        /// 根据ID获取信息
        /// </summary>
        /// <param name="guid"></param>
        /// <returns></returns>
        private string getModel(string guid)
        {
            return JsonConvert.SerializeObject(bll.GetModel(new Guid(guid))); //数据操作构造函数
        }

效果图：

列表信息显示效果图