daoquery源码

数据库应用，在许多软件系统中经常用到，是开发中大型系统不可缺少的辅助。但如果对数据库资源没有很好地管理(如：没有及时回收数据库的游标(ResultSet)、Statement、连接 (Connection)等资源)，往往会直接导致系统的稳定。这类不稳定因素，不单单由数据库或者系统本身一方引起，只有系统正式使用后，随着流量、用户的增加，才会逐步显露。 -database applications, in many software systems often used, is developing large systems indispensable aids. But if the right database resources are not well managed (eg : no timely recovery database cursor (ResultSet), the Statement connect (Connection), and other resources), will often lead directly to the stability of this system. Such factors of instability, not only by the database system itself or caused side, the official use only, as the flow of users increases, will gradually revealed.

ODBC异步调用：本实例将通过异步调用实现任意ODBC数据库的查询。数据库查询采用SQL语句。-ODBC asynchronous call : the examples of asynchronous transfer through Arbitrary ODBC database inquiries. Database queries using SQL statements.

网上书店。可以实现网上图书的各种业务。采用SQL和C#进行开发-Online bookstore. Can realize all kinds of business books online. Using SQL and C# Development

微软的SQL SERVER数据库的Image、text等字段都属于二进制的大对象。这些对象的存取和其他轻型对象略有不同。 　　微软.NET Framework的System.IO命名空间下给我们提供了一个FileStream文件流类。我们可以使用这个文件流对二进制大对象轻松进行读写。 　　我实现了一个简单的WinForm程序，这个程序通过点击“Open”按钮选择一个bmp或者jpg文件，并显示在图形控件PictureBox中。通过“Save”按钮存入数据库。点击“View”CheckBox可以切换到浏览状态，观看存入数据库的图片。 　　由于对二进制大对象使用的流操作，所以对于任何文件都具有通用性。读写文本文件也可以这么做。 -Microsoft s field and so on SQL SERVER database Image, text all belongs to binary the big object. These objects deposits and withdrawals and other light objects have the difference slightly. MicrosoftNET Framework System.Under the IO naming space provided a FileStream document to us to flow the kind. We may use this document to flow to the binary big object with ease carry on read-write. I have realized a simple WinForm procedure, this procedure through clicks on "Open" the button to choose bmp or the jpg document, and the demonstration controls in PictureBox in the graph. The button stores the database through "Save". Clicks on "View" CheckBox to b

一个不错的报名系统源程序，请多指点-a good source application system, please guidance

是一个用ado快速开发局域网的例子,主要介绍了ado 控件的使用,是目前比较缺乏的资料-ado is a rapid development with LAN example, the main controls of the use ado, is the lack of information

一个电脑配置DIY管理系统，本代码适合初学数据库者学习借鉴，大家共同学习。-DIY configure a computer management system, the code suitable for beginners who learn from the database, we learn together.

odbc 存取离子程序-odbc access procedures

pb 源码 打印预览-pb source Print Preview

基于C&S结构的考试管理系统 . 基于C&S结构的考试管理系统 基于C&S结构的考试管理系统-structure of the examination management system. Based on the structure of the CS management system based on the examination of CS Examination Management System