访问sql server的一个封装类，提供了增删查改各种操作-Sql server to access a package class that provides a variety of additions and deletions to change search operation

本代码可以实现对OLEDB数据库的加载，登陆，查询，非查询操作，即增，删改等功能是一般的方法，复用性良好，具体自己操作。-This code can realize OLEDB database loading, landing, query, non-query operation, ie, an increased excision and other functions is a general method, reusability, specific operation.