运算符查询指定条件的数据，基于C#实现，源码不多做介绍了，其它的一些功能就自己下载源码研究吧，数据库已附在源码包内，请自己解压配置连接-Operator query the data of the specified conditions, based on the C# implementation, the source code is not much to do to introduce some other function on their own download source r