How to make trail of Software using c#

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C#

Windows

I have made an application with c# and need to apply trail on user machine only for 30days how can i check it??

Posted 18-Feb-13 17:52pm

Hetal Jariwala

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bbirajdar 19-Feb-13 0:00am

what is trail? If you are speaking of this http://www.google.co.in/search?q=define%3A+trail&oq=define%3A+trail&sourceid=chrome&ie=UTF-8 then create temporary text files

Hetal Jariwala 19-Feb-13 0:02am

and how can i check if 30 days has done or not??

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*Karthik Harve* · Accepted Answer · 2013-02-18T18:11:00

Hi,

i suggest the below steps.

-> create two variables in registry - Installed Date, Last opened date with different keys.
-> In main function,
* if the installed date is empty or null, write the cuurent date
* also write the last opened date to current date.
* If installed is not null or empty, check for 30 days with current date. if it less than 30 (user may change system date), then check with last opened date.
* if you found, the date cross 30 days, stop all functionality of the application and show the message to user.

you can refer Read, write and delete from registry with C#[^] for more information.

you can also refer Make Your Application with Trial Version[^]

hope it helps.

David_Wimbley · Accepted Answer · 2013-02-18T18:15:00

Solution 2

If your going with the file based solution suggested by aspnet_regiis then here is below. I typed it into notepad so you might have to tweak it but it should work out.

C#

using System.IO;

DateTime fileDateCreated = File.GetCreationTime(@"C:\temp\your_trail_file.txt");
DateTime now = DateTime.Now;
TimeSpan span = now - fileDateCreated;
int totalDays = span.TotalDays;

if(totalDays > 30)
{
	//Delete Trail File or whatever logic you wish to perform
}

Posted 18-Feb-13 18:15pm

David_Wimbley

Comments

Shambhoo kumar 19-Feb-13 0:41am

nice work.

bbirajdar 19-Feb-13 4:59am

Yup.. I agree.. In fact my suggestion was very general in nature since the question was vague and incomplete.. What the question reflected was that some school student trying to write a program and too lazy with the keyboard to write a detailed description of the problem.. BTW +5

David_Wimbley 19-Feb-13 11:39am

Thank you much!