cangkuguanlixitong

说明：  网络测试系统,很实用的一个源码,很有参考价值,下载试试,多学习哦(Network test systems, it is a source of practical, useful reference, download a try, more to learn Oh)

VC++60编译通过，利用ODBC操作*.mdb数据库，非常完善的学生信息管理系统。可以改为其它数据库。(VC++ 60 compiler through the use of ODBC operation*. mdb database, an excellent student information management system. Could be converted to other databases.)

说明：  小巧的天气预报实时显示系统，采用GDI+技术开发，实现了基本且简单的功能，能在图片上实时显示温度/气温等天气预报情况，并能进行数据的维护更新。小巧的天气预报实时显示系统，采用GDI+技术开发，实现了基本且简单的功能，能在图片上实时显示温度/气温等天气预报情况，并能进行数据的维护更新。(compact real-time weather display system using GDI technology development, achieve the basic and simple functions, in real-time pictures show that the temperature/weather conditions such as temperature, and for the maintenance and update of data. The compact, real-time weather system, using GDI technology development, achieve the basic and simple functions, in real-time pictures show that the temperature/weather conditions such as temperature, and for the maintenance and update of data.)

说明：  此压缩文件包含2002年-2017年200多个地级市资本存量的数据，里面有详细的计算过程与说明。(This document contains the capital stock data of more than 200 cities in 2002-2017, including detailed calculation process and description, which is convenient for scholars to understand and master)

说明：  PowerBuilder的一些实例，适合初学者学习使用(Learning source code)

VC进行数据库编程，MFC编写的，可以与CListCtrl控件配合使用(VC database programming, MFC prepared can be used in conjunction with the CListCtrl control)

一段十分实用的VFP程序，可以实现VFP程序的错误处理(VFP Error)

说明：  VFP开发的主控程序，其中用了多种方法和技巧实现对用户权限的控制和选择。(VFP development of the control procedures, which use a variety of methods and techniques to achieve competence of the user control and choice.)

dbf filter sample I found and very useful for dbf database programing

Handling null fields in SQL queries