private static void AddParams(DbCommand cmd, QueryCommand qry)
        {
            if(qry.Parameters != null)
            {
                foreach(QueryParameter param in qry.Parameters)
                {
                    DbParameter p = cmd.CreateParameter();
                    p.ParameterName = param.ParameterName;
                    p.Direction = param.Mode;
                    p.DbType = param.DataType;
                    /*
                     * 修 改 人：Empty（AllEmpty）
                     * 修改說(shuō)明：修改提交的字符串長(zhǎng)度過(guò)長(zhǎng)產(chǎn)生的Bug
                     * 異常信息：System.Data.SqlClient.SqlException (0x80131904): 傳入的表格格式數(shù)據(jù)流(TDS)遠(yuǎn)程過(guò)程調(diào)用(RPC)協(xié)議流不正確。
                     *           參數(shù) 4 ("@up_xxx"): 數(shù)據(jù)類型 0xA7 的數(shù)據(jù)長(zhǎng)度或元數(shù)據(jù)長(zhǎng)度無(wú)效。
                     *********************************************/
                    if (param.DataType.ToString() == "AnsiString")
                    {
                        p.Size = -1;
                    }

                    //output parameters need to define a size
                    //our default is 50
                    if(p.Direction == ParameterDirection.Output || p.Direction == ParameterDirection.InputOutput)
                        p.Size = param.Size;

                    //fix for NULLs as parameter values
                    if(param.ParameterValue == null)
                    {
                        p.Value = DBNull.Value;
                    }
                    else if(param.DataType == DbType.Guid)
                    {
                        string paramValue = param.ParameterValue.ToString();
                        if (!String.IsNullOrEmpty(paramValue))
                        {
                            if(!paramValue.Equals("DEFAULT", StringComparison.InvariantCultureIgnoreCase))
                                p.Value = new Guid(paramValue);
                        }
                        else
                            p.Value = DBNull.Value;
                    }
                    else
                        p.Value = param.ParameterValue;

                    cmd.Parameters.Add(p);
                }
            }
        }