Implementing a 30-day trial period in a C#.net application.

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2.05/5 (4 votes)

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C#

tell me the ways to Implementing a 30-day trial period in a C#.net application.

Posted 5-Feb-14 19:34pm

opuspriyanka

Updated 4-Aug-16 3:54am

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dimpledevani 6-Feb-14 1:45am

You can store the install date somewhere in your application's registry or in database and then compare that date every time you lunch your application.If it crosses more than 30 days, then you can get your requirement done.

opuspriyanka 6-Feb-14 5:46am

Please provide the code for same in c#

4 solutions

Solution 3

You must obfuscate your C# Application to make it hard to crack.

Posted 5-Feb-14 22:20pm

Manikandan10

Solution 2

check this link

http://www.c-sharpcorner.com/uploadfile/tanmayit08/make-your-application-with-trial-version/[^]

Posted 5-Feb-14 21:35pm

Praveen_P

Solution 4

C#

private void Form1_Load(object sender, EventArgs e)
      {

          if(DateTime.Now.ToString("dd")=="04" && DateTime.Now.ToString("MM")=="08" && DateTime.Now.ToString("yyyy")==("2016"))
          {

              Application.Exit();
          }

      }

Posted 4-Aug-16 3:54am

gulsherkhan shams

Updated 4-Aug-16 3:56am

v3

Comments

Dave Kreskowiak 4-Aug-16 10:25am

This question is TWO YEARS old and your solution isn't applicable to the problem and is very easily worked around.

Don't post answers to questions this old.

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CoderPanda · Accepted Answer · 2014-02-05T19:43:00

I think this is a good question to start with.

Here is an excellent article[^] if you want to learn regarding building trial versions of software. It covers:
Where to Store the Expiration Data
How to detect system clock manipulation

You may also want to read another piece[^] from the same author to broaden your knowledge.

Finally, some SO discussions such as this[^] may also help.

[Please accept/up-vote answers or solutions that work for you to encourage others]