创建产品密钥和试用版 [英] Create Product Key and Trial Version

问题描述

我已经在Visual Basic 2012和MySQL数据库中开发了一个小型商业应用程序.现在，我想出售试用版和注册版.我只希望将试用期设置为7天，从安装日期算起.如果它大于 7天，然后显示输入产品密钥"，如果未输入产品密钥"，则不显示初始屏幕.然后，产品注册密钥取决于计算机ID.例如:机器ID为30-F7-72- XX-XX-XX，产品密钥为1234-1234-1234-1234，则该产品密钥未使用 另一个系统.但是，我不知道设计产品注册码！.请帮助我的源代码.........

I have developed a small commercial application in Visual Basic 2012 and MySQL database. Now, I want to sale it with trial version and registered version. I want set only 7 days for Trial period, it count from installation date. If  it's greater than for 7 days then show Enter Product key, If It's not Enter Product Key don't show splash screen.Then Product Registration Key is depend on Machine ID. Eg: Machine ID is 30-F7-72- XX-XX-XX and Product Key is 1234-1234-1234-1234 then this product Key is not use another system. However, I am not getting any idea to design a Product Registration Code!. Please Help my source code............

dopenoinam

dopenoinam

推荐答案

Dopen，

Dopen,

从以前走过这条路的人那里买来的-从信誉良好的公司购买.您将花费很长时间来制作自己的作品.

From someone who's been down this road before -- buy it from a reputable company. You'll spend a long time to make your own.

对于它的价值...

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