asp.net 工商银行系统B2B网上转帐源码 实现查询接口

//查询接口类ICBCQuery,命名空间为Bank

public class ICBCQuery
    {
        static string apiUrl = "https://corporbank.icbc.com.cn/servlet/ICBCINBSEBusinessServlet";
        static string cerPath = HttpContext.Current.Server.MapPath("~/Bank/zysggzyjyzx.pfx");
        static string cerPwd = "123456";


        #region 属性
        //pub
        //接口名称
        private string _APIName;
        public string APIName
        {
            get { return _APIName; }
            set { _APIName = value; }
        }
        //接口版本号
        private string _APIVersion;
        public string APIVersion
        {
            get { return _APIVersion; }
            set { _APIVersion = value; }
        }
        //in
        //订单号
        private string _orderNum;
        public string orderNum
        {

            get { return _orderNum; }
            set { _orderNum = value; }
        }
        //交易日期
        private string _tranDate;
        public string tranDate
        {
            get { return _tranDate; }
            set { _tranDate = value; }
        }
        //商家号码
        private string _ShopCode;
        public string ShopCode
        {
            get { return _ShopCode; }
            set { _ShopCode = value; }
        }
        //商城账号
        private string _ShopAccount;
        public string ShopAccount
        {
            get { return _ShopAccount; }
            set { _ShopAccount = value; }
        }
        //out
        //指令序号
        private string _tranSerialNum;
        public string tranSerialNum
        {
            get { return _tranSerialNum; }