this is my simple form created in visual basic 6.0.

Unfortunately Microsoft has never paid much attention to the serial port. In the Windows API it is just regarded as a file, and in the first version (1.1) of the .NET framework (managed code) there was no support for serial communication. Fortunately

中小型物流公司管理代收货款，批量录入票据、批量审核票据、批量发放代收货款、统计查询、报表查询。 注意事项：批量录入数据先试用EXCEL文件夹中的EXCEL文件格式录入数据，在票据数据第一行如果提付、已付、回付、代扣、代收款为空时请直接输入0，ASP读取Excel在第一行为空时以下行均不读取。 点击简易IIS服务器.exe直接运行 初始登录用户名admin密码admin-Small and medium-sized logistics company management the co