软件试用次数的限制有很多种方法，其关键是把次数这个值存储在哪 里。本文介绍一种方法，通过改变文件 的时间来存储试用次数，从而限制软 件的试用。稍微修改一下程序就可以使用了。-Try limiting the number of software there are many ways, the key is the frequency of this value is stored in the where. This article describes a method by changing the document to store the number of trials, thus limiting the trial software. Slightly modify the process can be used.