Hi! I've found another method to help you...
Do like this:
Code Snippet
Public Function ToLocalTime
As DateTime
and
Code Snippet
Dim instance As DateTime
Dim returnValue As DateTime
returnValue = instance.ToLocalTime()
Or
Code Snippet
<SerializableAttribute> _
<ComVisibleAttribute(
True)> _
Public MustInherit Class TimeZone
and
Code Snippet
Dim instance
As TimeZone
You could use one of this methods to create a function that get the time and by getting the current time, date and day you could set another function that goes from this date and 30-day’s forward + by adding a registry value somewhere on the registry, When you create the software installation program or package then add a registry value that could been added automatically to the Windows registry.
Next, you do like this create a small exe file and let this exe file to been installed inside this folders:
C:\Windows\system32\example.exe
Next every time the software starts it goes to the registry and checks the value if the value still the same as the installation program has installed or added then continue running normally but after 30-days run at the startup the:
C:\Windows\System32\example.exe
When the example.exe will run it will automatically change the registry value and if the user clicks on exit and restarts the program it will automatically read the reg-value and if it have been changed then the program would change the Application startup properties to make another window to startup and that windows could been closed by the user the user must start Task Manager to close the process of the program.
Next when this dialog appears on the screen it will ask for a product key if the product key is right the it would automatically remove the 30-day functions and make the software run normally.
You could also add the:
Dllimport functions with ("user32.dll").
Or
I’ve found one more idea for you:
You could test it if you want, do like this:
- Click on Start and choose Run
- Write the following thing to run as an example:
“at 08:55, C:\Windows\System32\cmd.exe”
this would automatically been added to the “Scheduled Tasks” and it would run at that time in the background as SYSTEM, but you could try to found a way to make it after 30-days.
System.Diagnostics.Process.Start(“at example, C:\Windows\System32\Example.exe”)
This is another method which I’ve just tested.
I wish you the Best of luck!
