无法创建大小为32150的行，该值大于允许的值8060

我用的是nchar（4000）类型，在数据库中可以插入数据成功，没有提示这种错误，但是我在应用程序里插入就提示：
无法创建大小为32150的行，该值大于允许的值8060？
应用程序代码如下：
/// <summary>
        /// 添加店铺情况信息
        /// </summary>
        /// <param name="list">参数列表</param>
        /// <returns>行数为一返回TRUE</returns>
        public bool InsertT_StoreCondition(ArrayList list)
        {
            SqlParameter[] par = GetRegisterParameters();
            par[0].Value = list[0].ToString();
            par[1].Value = list[1].ToString();
            par[2].Value = list[2].ToString();
            par[3].Value = list[3].ToString();
            par[4].Value = list[4].ToString();
            par[5].Value = list[5].ToString();
            par[6].Value = list[6].ToString();            par[7].Value = list[7].ToString();
            par[8].Value = list[8].ToString();
            par[9].Value = list[9].ToString();
            par[10].Value = list[10].ToString();
            par[11].Value = list[11].ToString();
            par[12].Value = list[12].ToString();
            par[13].Value = list[13].ToString();            par[14].Value = list[14].ToString();
            par[15].Value = list[15].ToString();
            par[16].Value = list[16].ToString();
            par[17].Value = list[17].ToString();
            par[18].Value = list[18].ToString();
            par[19].Value = list[19].ToString();            int i = SqlHelper.ExecuteNonQuery(SqlHelper.CONN_STRING, CommandType.StoredProcedure,
                  PROC_INSERT_T_StoreCondition, par);
            if (i == 1)
            {
                return true;
            }
            else
            {
                return false;
            }
        } /// 初始化参数集
        /// </summary>
        /// <returns></returns>
        private SqlParameter[] GetRegisterParameters()
        {
            SqlParameter[] pas = SqlHelper.GetCachedParameters(PROC_INSERT_T_StoreCondition);            if (pas == null)
            {
                pas = new SqlParameter[] 
                { 
                    new SqlParameter(PARM_CONDITIONCODE,SqlDbType.VarChar,20),
                    new SqlParameter(PARM_CREATE,SqlDbType.VarChar,10),
                    new SqlParameter(PARM_STORECODE,SqlDbType.VarChar,20),
                    new SqlParameter(PARM_CHANGEUSAGE,SqlDbType.Int),
                    new SqlParameter(PARM_LINKMAN,SqlDbType.Char,10),
                    new SqlParameter(PARM_MOBILE,SqlDbType.Char,20),
                    new SqlParameter(PARM_CONSTRUCT,SqlDbType.NChar,4000),
                    new SqlParameter(PARM_BASECONST,SqlDbType.NChar,4000),
                    new SqlParameter(PARM_SOCONDITIONS,SqlDbType.NChar,4000),
                    new SqlParameter(PARM_FIREPROTECTION,SqlDbType.NChar,4000),
                    new SqlParameter(PARM_STOREHOUSE,SqlDbType.NChar,4000),
                    new SqlParameter(PARM_AD,SqlDbType.NChar,4000),
                    new SqlParameter(PARM_FITMENT,SqlDbType.NChar,4000),
                    new SqlParameter(PARM_REMARK,SqlDbType.NChar,4000),
                    new SqlParameter(PARM_PICNUM,SqlDbType.Char,5),
                    new SqlParameter(PARM_VIDEONUM,SqlDbType.Char,5),
                    new SqlParameter(PARM_PPICNUM,SqlDbType.Char,5),
                    new SqlParameter(PARM_MAPNAME,SqlDbType.NChar,50),
                    new SqlParameter(PARM_MAPINSTRU,SqlDbType.NChar,255),
                    new SqlParameter(PARM_IMAGEPATH,SqlDbType.NChar,255)
                };
                SqlHelper.CacheParameters(PROC_INSERT_T_StoreCondition, pas);
            }
            return pas;
        }
请问这是为什么呢，我用的是存储过程，在查询分析器里可以执行成功：如：
exec proc_INSERT_T_StoreCondition --执行存储过程
'5448100710110939','2010-09-07','009',1,'4','4',
'4?4?true?false?true?false?true?false?false?false?true?false?',
'4?4?4?false?true?false?false?true?false?false?true?false?true?4?',
'false?true?false?true?false?false?false?4?false?false?true?false?false?false?false?false?true?false?true?false?false?false?4?false?true?false?4?4?4?4?',
'false?true?false?false?false?true?false?true?false?false?true?false?true?false?true?false?false?true?false?true?4?',
'4?4?4?4?4?4?4?4?4?',
'4?4?4?4?4?4?4?4?4?4?4?4?true?false?false?4?4?4?true?false?false?4?4?4?true?false?false?false?false?true?false?true?false?',
'true?false?false?true?44??false?false?true?false?true?4?4?4?4?4?true?true?4?4?4?true?false?true?false?',
'11111','11','1','1','','',''