Using Date and Time 365 days licenss

Question

How do I calculate 365 days from the last application is started?

If I use the system. User may change it back and forth

1. What software will not work for a lock

Software should be calculated after 365 days in office have all been closed and a message will be new offices and again How do I calculate 365 days have passed and the new offices should be created?

Kunal Vaishya · Answer

Dear this is For 15 days you can change as per your requirment Please try thic Procedure put this om main for load event its also restrict of date change itvery use full let me know private DateTime RegDate; private DateTime todayDate; private void CheckLicenceAgreement() { try { //If Not Exist The Add Date Firet Time if (Convert.ToString(Application.UserAppDataRegistry.GetValue(RegDate)) == ) { RegDate = DateTime.Now; RegDate = RegDate.AddDays(15); Application.UserAppDataRegistry.SetValue(RegDate RegDate.ToString(yyyyMMdd)); Application.UserAppDataRegistry.SetValue(ApplicationStart 1); } else { //Check It Int32 Regdt; Int32 todt; Regdt = Convert.ToInt32(Application.UserAppDataRegistry.GetValue(RegDate)); todt = Convert.ToInt32(System.DateTime.Now.ToString(yyyyMMdd)); if ((todt > Regdt) || (Convert.ToString(Application.UserAppDataRegistry.GetValue(ApplicationStart)))==0) { Application.UserAppDataRegistry.SetValue(ApplicationStart 0); Application.Exit(); } } } catch (Exception ex) { Application.Exit(); } }

Mohammadali · Answer

If the user time and system date forward and back or what? Calculations are wrong It was not happening and will lock the software properly ?

Kunal Vaishya · Answer

refer this link also http://www.c-sharpcorner.com/Forums/Thread/169140/how-to-validate-on-date-in-C-Sharp.aspx