微软数据访问应用程序块(Microsoft Data Access Application Block): http://msdn.microsoft.com/zh-cn/library/aa480458.aspx
2.0: Earlier Release: Data Access Application Block 2.0 (pre-Enterprise Library)
2.0下载地址: http://www.microsoft.com/download/en/confirmation.aspx?id=435
2.0中的sqlhelper: http://files.cnblogs.com/fiteg/CS.rar
中文解释: http://www.feiyan.info/upload/SqlHelper.cs.pdf 或者 风筝链接
2012.02.17