<div id="setBtn_dd" class="easyui-window" data-options="iconCls:'icon-save',buttons:'#setBtn_dlg-buttons',closed:true,modal:true,width:380,height:380">

        <form id="setBtn_ff" method="post" autocomplete="off" style="margin-top: 30px">

            <table class="tb1">

                <tr hidden="hidden">

                    <td class="td1">MenuID：</td>

                    <td class="td2">

                        <input id="setBtn_MenuID" class="easyui-validatebox textbox" type="text" name="menuId" style="width: 200px; height: 30px;" /></td>

                </tr>

                <tr>

                    <td class="td1">菜单名称：</td>

                    <td class="td2">

                        <input id="setBtn_MenuName" class="easyui-validatebox textbox" type="text" name="menuName" data-options="required:'true',validType:'maxLength[100]'" style="width: 200px; height: 30px;" disabled="disabled" /></td>

                </tr>

                <tr>

                    <td class="td1">按钮：</td>

                    <td class="td2">

                        <select id="combotree_setBtn" class="easyui-combotree" name="combotree_setBtn" data-options="validType:'maxLength[100]',multiple:true" style="width: 200px; height: 30px;" /></td>

                </tr>

            </table>

            <div id="setBtn_dlg-buttons">

                <a id="setBtn_ddok" href="javascript:void(0)" onclick="javascript:saveMenuBtn();" class="easyui-linkbutton" data-options="iconCls:'icon icon-ok'">保存</a>

                <a id="setBtn_ddcancel" href="javascript:void(0)" onclick="javascript:$('#setBtn_dd').window('close');" class="easyui-linkbutton" data-options="iconCls:'icon icon-cancel'">取消</a>

            </div>

        </form>

    </div>

$("#z-toolbar").on("click", "#btnSetMenuButton", function () {

        var row = $('#tbMenu').datagrid('getSelected');

        if (row == null) {

            $.messager.alert('警告', '请选择至少一行数据', 'warning');

            return;

        }

        $.ajax({

            type: 'post',

            dataType: "json",

            url: '/Handlers/MenuHandler.ashx?action=IsExistSon&menuId=' + encodeURI(row.menuId),　　//判断是否有下级

            success: function (data) {

                if (data.Success) {

                    $('#setBtn_dd').dialog({

                        closed: false,

                        title: '分配按钮',

                        onBeforeOpen: function () {

                            //加载时选中已经分配好的按钮

                            $.ajax({

                                type: 'post',

                                dataType: "json",

                                url: '/Handlers/MenuButtonHandler.ashx?action=LoadMenuButton&menuId=' + encodeURI(row.menuId),

                                success: function (mb_data) {

                                    if (mb_data.Success) {

                                        $('#combotree_setBtn').combotree('setValues', mb_data.Message);

                                    }

                                }

                            })

                        }

                    });

　　　　　　　　　　　　//向combotree绑定值

                    $('#combotree_setBtn').combotree(

                        {

                            url: "/Handlers/ButtonHandler.ashx?action=GetButtonTree"

                        });

                    $('#setBtn_ff').form('load', row);

                } else {

                    $.messager.show({

                        title: '错误',

                        msg: data.Message

                    });

                }

            }

        })

    })

 private void GetButtonTree(HttpContext context)

        {

            string where = "1=1";

            List<Model_tb_button> btnList = new BLL_Button().GetButtonTable(where);

            StringBuilder sbStr = new StringBuilder();

            sbStr.Append("[{\"id\":0, \"text\": \"全选\", \"children\":[");

            if (btnList != null && btnList.Count > )

            {

                foreach (var item in btnList)

                {

                    sbStr.Append("{\"id\":" + item.btnId + ", \"text\":\"" + item.btnName + "\", \"iconCls\":\"" + item.btnIcon + "\"},");

                }

                sbStr.Remove(sbStr.Length - , );

            }

            sbStr.Append("]}]");

            Response.WriteJson(context, sbStr);

        }

BLL

public List<Model_tb_button> GetButtonTable(string where)

        {

            DataSet ds = this.dal.GetButtonTable(where);

            return ModelHandler<Model_tb_button>.FillModel(ds.Tables[]);

        }

DLL

public DataSet GetButtonTable(string where)

        {

            StringBuilder sbSql = new StringBuilder();

            sbSql.Append("SELECT btnId AS id, btnName AS text, btnIcon AS iconCls, * FROM dbo.tb_button  ");

            if (!string.IsNullOrEmpty(where))

            {

                sbSql.Append("  WHERE   " + where);

            }  

            return DbHelperSQL.Query(sbSql.ToString());

        }

Model

[Serializable]

    public partial class Model_tb_button

    {

        public Model_tb_button()

        { }

        #region Model

        private int _btnid;

        private string _btnname;

        private string _btncode;

        private string _btnicon;

        private DateTime? _createtime;

        private string _createby;

        private DateTime? _updatetime;

        private string _updateby;

        /// <summary>

        ///

        /// </summary>

        public int btnId

        {

            set { _btnid = value; }

            get { return _btnid; }

        }

        /// <summary>

        ///

        /// </summary>

        public string btnName

        {

            set { _btnname = value; }

            get { return _btnname; }

        }

        /// <summary>

        ///

        /// </summary>

        public string btnCode

        {

            set { _btncode = value; }

            get { return _btncode; }

        }

        /// <summary>

        ///

        /// </summary>

        public string btnIcon

        {

            set { _btnicon = value; }

            get { return _btnicon; }

        }

        /// <summary>

        ///

        /// </summary>

        public DateTime? createTime

        {

            set { _createtime = value; }

            get { return _createtime; }

        }

        /// <summary>

        ///

        /// </summary>

        public string createBy

        {

            set { _createby = value; }

            get { return _createby; }

        }

        /// <summary>

        ///

        /// </summary>

        public DateTime? updateTime

        {

            set { _updatetime = value; }

            get { return _updatetime; }

        }

        /// <summary>

        ///

        /// </summary>

        public string updateBy

        {

            set { _updateby = value; }

            get { return _updateby; }

        }

        #endregion Model

    }