/// <summary>
/// 根据数据库连接字符串和数据库类型，构造数据库操作类
/// </summary>
/// <param name="connectionString">数据库连接字符串</param>
/// <param name="dbType">dbType分为：oracle和sqlserver</param>
public OLEDB_DBOperator(string connectionString, string dbType)
{
this.conn = new OLEDB_Oracle_SQLServer();
this.conn.Connect(connectionString, dbType);
this.DBType = this.conn.DBType;
}
} // 连接的OLEDB数据库类型
public OLEDB_DBOperator(string configFilePath)
{
this.conn = new OLEDB_Oracle_SQLServer();
this.conn.Connect(configFilePath);
this.DBType = this.conn.DBType;
}