public List <V_Offline> GetHistory(DateTime start, DateTime end)
        {
            SqlParameter[] parms = { new SqlParameter("@Start", SqlDbType.DateTime),
                                     new SqlParameter("@End",   SqlDbType.DateTime) };

            parms[0].Value = SqlTypeConverter.DBNullDateTimeHandler(start);
            parms[1].Value = SqlTypeConverter.DBNullDateTimeHandler(end);

            var entities = new List <V_Offline>();

            using (var rdr = SqlHelper.ExecuteReader(this._databaseConnectionString, CommandType.Text, SqlCommands_Cs.Sql_V_Offline_Repository_GetHistory1, parms)) {
                while (rdr.Read())
                {
                    var entity = new V_Offline();
                    entity.Id          = SqlTypeConverter.DBNullStringHandler(rdr["Id"]);
                    entity.Type        = SqlTypeConverter.DBNullEnmSSHHandler(rdr["Type"]);
                    entity.FormulaType = SqlTypeConverter.DBNullEnmFormulaHandler(rdr["FormulaType"]);
                    entity.StartTime   = SqlTypeConverter.DBNullDateTimeHandler(rdr["StartTime"]);
                    entity.EndTime     = SqlTypeConverter.DBNullDateTimeHandler(rdr["EndTime"]);
                    entity.Value       = SqlTypeConverter.DBNullDoubleHandler(rdr["Value"]);
                    entities.Add(entity);
                }
            }
            return(entities);
        }
        public List <V_Offline> GetActive()
        {
            var entities = new List <V_Offline>();

            using (var rdr = SqlHelper.ExecuteReader(this._databaseConnectionString, CommandType.Text, SqlCommands_Cs.Sql_V_Offline_Repository_GetActive1, null)) {
                while (rdr.Read())
                {
                    var entity = new V_Offline();
                    entity.Id          = SqlTypeConverter.DBNullStringHandler(rdr["Id"]);
                    entity.Type        = SqlTypeConverter.DBNullEnmSSHHandler(rdr["Type"]);
                    entity.FormulaType = SqlTypeConverter.DBNullEnmFormulaHandler(rdr["FormulaType"]);
                    entity.StartTime   = SqlTypeConverter.DBNullDateTimeHandler(rdr["StartTime"]);
                    entity.EndTime     = SqlTypeConverter.DBNullDateTimeHandler(rdr["EndTime"]);
                    entity.Value       = SqlTypeConverter.DBNullDoubleHandler(rdr["Value"]);
                    entities.Add(entity);
                }
            }
            return(entities);
        }