为了循序渐进的了解投票功能，本人专门开发了这套简单投票系统，投票的数据保存在Sql数据库中，只保存投票的项目及票数。

本系统的实现原来是用户每投一次，将在数据库中对应的项目票数上加1。该系统数据源采用了SqlDataSource，其中自定义了很多方法和函数。

-In order to understand the voting feature step by step, I developed the simple special voting system, voting data is stored in Sql database projects and save only the number of votes to vote. Implementation of this system is the original vote once for each user, the corresponding entry in the database on the number of votes plus 1. The system data source using the SqlDataSource, which defined a number of methods and functions.