销售管理系统，包括了源代码和程序。功能完善，结构不错。-Sales management system, including the source code and procedures. Functional, structural good.

C#进销存销售管理系统的设计与实现，详细的编写过程，C++编写，SQl连接数据库。-C# Invoicing sales management system design and implementation of detailed preparation process, C++ written, SQl connect to the database.