一般处理程序页ashx 序列化 Json数组

function PurchaseAutonomy() {
        var r = 0;
        var parmArr = new Array();
        $("#dataTb tbody tr").each(function () {
            var ch = $(this).children().eq(0).children().eq(0).attr("checked");
            var num = $(this).children().eq(7).children().eq(0).val();            
            if (ch == true)
            {
                if (IsNum(num)) {
                    return false;
                } else {
                    parmArr[r] = {
                        PRODUCT_ID: $(this).children().eq(1).text(),
                        PRODUCT_NAME: $(this).children().eq(3).text(),
                        ORG_ID: $(this).children().eq(0).children().eq(2).val(),
                        JS_PRICE: $(this).children().eq(0).children().eq(4).val(),
                        NOS_PRICE: $(this).children().eq(0).children().eq(3).val(),
                        PRODUCT_PRICE: $(this).children().eq(0).children().eq(4).val(),
                        PURCHASE_NUM: $(this).children().eq(7).children().eq(0).val()
                    };

                    r++;
                }
            }
        });
        
        if (r > 0) {

            $.MsgBox.Confirm("温馨提示", "生成预订单，确定继续吗？温馨提示", function () {
                var a = parmArr;
                $.ajax({
                    type: "POST",
                    url: "/DataServer/Purchase/PurchaseAdd.ashx",
                    data: { parmArr: JSON.stringify(parmArr),user_id:<%=user_id%>,bm_id:<%=bm_id%> },
                    datatype:"json",
                    contentType: "application/x-www-form-urlencoded; charset=utf-8",
                    success: function (result) {
                        if (result == "1") {
                            $.MsgBox.Alert("提示", "生成采购计划成功！");
                            $("#dataTb tbody tr input[type=‘checkbox‘]").attr("checked",false);
                            $("#dataTb tbody tr input[name=‘purchase_num‘]").val("0");
                        } else {
                            $.MsgBox.Alert("提示", "生成采购计划失败！");
                            return false;
                        }
                    }
                });

            });
        } else {
            $.MsgBox.Alert("提示", "请选择要处理的记录！");
            return false;
        }

    }

/// <summary>
    /// ET_PURCHASE_ITEM:实体类(属性说明自动提取数据库字段的描述信息)
    /// </summary>
    [Serializable]
    public partial class ET_PURCHASE_ITEM
    {
        public ET_PURCHASE_ITEM()
        { }
        #region Model
        private decimal? _org_id;
        private decimal? _product_id;
        private string _product_name;
        private decimal? _js_price;
        private decimal? _nos_price;
        private decimal? _purchase_num=0;
        private decimal? _product_price;
        
        /// <summary>
        /// 
        /// </summary>
        public decimal? ORG_ID
        {
            set { _org_id = value; }
            get { return _org_id; }
        }
        /// <summary>
        /// 
        /// </summary>
        public decimal? PRODUCT_ID
        {
            set { _product_id = value; }
            get { return _product_id; }
        }
        /// <summary>
        /// 
        /// </summary>
        public string PRODUCT_NAME
        {
            set { _product_name = value; }
            get { return _product_name; }
        }
        /// <summary>
        /// 
        /// </summary>
        public decimal? JS_PRICE
        {
            set { _js_price = value; }
            get { return _js_price; }
        }
        /// <summary>
        /// 
        /// </summary>
        public decimal? NOS_PRICE
        {
            set { _nos_price = value; }
            get { return _nos_price; }
        }
        /// <summary>
        /// 
        /// </summary>
        public decimal? PURCHASE_NUM
        {
            set { _purchase_num = value; }
            get { return _purchase_num; }
        }
        
        /// <summary>
        /// 
        /// </summary>
        public decimal? PRODUCT_PRICE
        {
            set { _product_price = value; }
            get { return _product_price; }
        }
        
        #endregion Model

    }