.net环境下利用PI-SDK读取PI实时数据库历史值，极值，实时值，间隔取值。-. Net environment using PI-SDK PI real-time database to read historical values, extreme, real-time value, the interval values.

通过ODBC方式，从PI数据库取出测点实时数据，转存到SQLSERVER数据库中(Through ODBC mode, real-time data of measuring points are extracted from the PI database and transferred to the SQLSERVER database)