Hello Sandeep,
You can use the registry to store the time of installation
1. Your installer should make a registry entry when it is installed. This
entry should be encrypted so that external modifications are not permitted
easily.
2. Your application should query this registry key on start-up, And use the
DateTimeclass to see the time difference between the installation time and
the current time. If it is beyond the trial time, the application should
refuse to start-up or better still, prompt for a license key.
To implement a license key, please visit
http://windowsforms.net/articles/Licensing.aspx Regards
Vipul
Regards
[quoted text, click to view] "Sandeep Patel" wrote:
> Hi , Myself Sandeep Patel and i am student of MCA last sem.
> I want to know how to make my vb.net developed appliction for trial version for 30 days using API or any other way plz give me some help ot tips or if possible than provide vb.net code for making it as trail version of application so that i can give customer for demonstrate the product.
>
> Help Me. I am waiting for ur valuable response.
>
> From
http://www.developmentnow.com/g/26_2004_10_8_0_0/dotnet-framework-setup.htm >
> Posted via DevelopmentNow.com Groups
>
http://www.developmentnow.com
Hello Sandeep,
You can use the registry to store the time of installation
1. Your installer should make a registry entry when it is installed. This
entry should be encrypted so that external modifications are not permitted
easily.
2. Your application should query this registry key on start-up, And use the
DateTimeclass to see the time difference between the installation time and
the current time. If it is beyond the trial time, the application should
refuse to start-up or better still, prompt for a license key.
To implement a license key, please visit
http://windowsforms.net/articles/Licensing.aspx Regards
Vipul
Regards
[quoted text, click to view] "Sandeep Patel" wrote:
> Hi , Myself Sandeep Patel and i am student of MCA last sem.
> I want to know how to make my vb.net developed appliction for trial version for 30 days using API or any other way plz give me some help ot tips or if possible than provide vb.net code for making it as trail version of application so that i can give customer for demonstrate the product.
>
> Help Me. I am waiting for ur valuable response.
>
> From
http://www.developmentnow.com/g/26_2004_10_8_0_0/dotnet-framework-setup.htm >
> Posted via DevelopmentNow.com Groups
>
http://www.developmentnow.com
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