这是我开发的第一个项目:发票管理系统原代码及生成的可执行文件,没有完成就做另一个项目了,但我觉得这个项目的思路挺好的,所以把他上传来给大家参考.-This is my first project developed: Invoice Management System to generate the original code and the executable file, not completed on another project to do, but I think the idea