关于软件的过期.. [英] About Expire of a software..

问题描述

我正在vb.net中开发一个软件。然后我想部署给客户。但他还没准备好支付那个软件。他先告诉我他想要一个小道版。我很努力地把他作为一条小道。我想过期日期..如何设置过期日期..？

我知道只使用系统时间给出过期日期。在这种情况下，他有机会改变系统时间和重用..我如何给15天过期日期..

任何让我知道如何计算安装时间到15天之间的天数...

I am developing a software in vb.net . Then I want to deployment to a customer. but he don't ready to give the payment of that software. he told me first he want a trail version. I am reedy to give him as a trail. I want to an expire date.. How to set that Expire date..?
I know only to give expire date using system time.. In that case he has a chance to change the System time and reuse.. How can I give 15 days Expire date..
any give me any idea about how to calculate days between Installed time to 15 days count..

推荐答案

你知道我们有代码项目中的许多文章 [ ^ ]？

我认为这里的问题是获取当前日期。为此你应该阅读这个 [ ^ ]由SeaWater获取日期来自远程服务器。



如果您无法获得此日期，则不应加载该应用程序。



然后，根据您自己的逻辑，将此日期与您建立的到期日期进行比较。



作为替代方案，您可以启用用户打开应用程序有限次数...



祝你好运

I think that the problem here is to get the current date. For that you should read this[^] by SeaWater to get the date from a remote server.

If you can not get this date, you should not load the application.

Then, depending on you own logic compare this date to an "expiration" date you established.

As an alternative, you could enable the user to open the aplication for a limited number of times...

Best regards

有几种方法可以实现这一点..一些如下..



1.第三方软件就像SoftActive一样。



2检查用户在具有字段日期的软件中存储的数据，这些数据不能被他删除。例如由于您没有提及您的应用程序类型或类别或您的应用程序将用于何种目的。以会计软件用户为例总是创建发票，因此他在数据库中保存发票号，日期，格式等。并且这些数据不会被他删除，因为会计年度的每一端都需要这些数据。所以你可以跟踪他正在使用的日期。不知道其他国家，但在印度，你不能创建过时的发票。



3.以其他格式的文件保存安装日期并保留该文件其他一些地方。

例如在notpad中保存安装日期并将其保存在某些windows / system32文件夹中。

There are several way by which you can achieve this..some are as follows..

1. Third party software to do so like SoftActive.

2. Check Data which is store by user in software with field Date, which cannot be delete by him. e.g. As you didn't mention you application type or category or 'for what purpose your application will be used.' Take example of Accounting software user always create Invoices, so he saves invoice no, date , grandtotal etc. in database. and this data will not be deleted by him because that will be required in every end of accounting year. So there you can track which date, he is using. No idea about other countries but in India, you can not create back dated invoices.

3. Save Date of installation in other format of file and keep that file some other place.
e.g. save date of installation in notpad and save that in some "windows/system32" folder.

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