How do programs like antivirus keep track of time passed for the trial period? Eg I want to make a program that expires and stop working in 30 days One way I thought of is to make use of the system time.
View 6 Replieshow can i make a trial period application in visual basic 2010
View 3 RepliesI have just completed a custom banking & accounting software application for a stingy client who doesnt wants to pay-up! How do i make the application a trail version that will expire in say 30 days, and also ensure that whenever it is installed, it checks for first installation and indicate remaining trial days.
View 2 RepliesIf we made programs in Visual Basic Express 2010 Trial are we allowed to keep the programs and distribute them freely on our sites and if we unistalled visual Basic can we keep the programs etc...
View 2 Replieshow can i add a trial with random serials or single serial and once it get registered expire it after 6-12 months....and also if user change its clock time to some day back it remains expire.....
View 1 RepliesI defined a procedure in splash screen to check application trial time, but now it is still working after deleting the procedure from splash screen form. I am not able to understand why and from where it is working.
View 4 RepliesI am trying to display a dialog for a period of time. if the user is not present, I want it to close and perform a task. I am using a background worker, which is supposed to simulate a button click. It performs the button click fine, but the dialog never goes away.
Private Sub Backgroundworker_ProgressChanged() Handles BackgroundWorker1.ProgressChanged
If Me.BackgroundWorker1.WorkerReportsProgress >= 100 Then
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take a shot from a camera every last day of the month at midnight. I know how to to take the shot, but I don't know how to generate an event repetitively after a time period. I thought about to calculate the time between now and the next shot time, but how to run a method after a time period?
View 3 RepliesHow I can stop my application if not use it for a period of time ?
View 1 RepliesI have been trying to find out of the last hour how to do something proberbly very simple ?
I have a button, when I click on it, I want to loop the code inside this button for 60 seconds.
How can I loop through each date in a given time period so that I can add those dates as a column name in a table. I want to create datatable with the person's name and hours he worked in a given time period. The user will select the dates and I want to show each day/date in that table as a column name.
View 1 RepliesI have set up a simple quiz where you drop answers to the correct question. I have implemented a system where the are 18 text boxes (9 for questions, 9 for answers) and it can be customised but I want the questions to be able to be 'saved's since it in another form the if I give them special names when I close the form and open it again it has lost the values. Is there a way to remember the variables for a set period of time (cookies?) or if not just for that session?
View 2 RepliesI want my program to work for a certain period of time, may be one month.. two month..
View 1 RepliesIs there a way to code, so that if your program freezes over a period of time (5sec), it just stops trying to do it, and goto something else.
"On ERROR" wont work, since its not a error. "Try" doesnt work ether.
Its because I'm am programming something that can login to a router thought telnet, and sometimes the telnet ActiveX doesn't read the buffer or the line proberly, so when the .GetLine() func is called, it freezes. And i want away to goto another point if it keeps freezing for more than 5secounds. The telnet ActiveX that, I am using is Dimac w3sock.
I am looking for a library doing set operations on time periods with support of weekdays and time of day. I have started to roll my own, but it seems like a error-prone job so I would like a tested solution for this.I don't mind spending money. If I have a set of two time periods (this can be several)
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I have created a windows service in C# .net and now I want it to alert me if its going to shutdown. For this I make use of Dispose/Unload events but now I want if the services are stopping due to system shutdown process it will alert me.
View 1 RepliesI have already made an algorithm for the problem but it still got a trouble.Suppose that I have the recap of schedule (contains on gridview named GV):
TimeStart TimeEnd TotalOccuredOnThisTime
----------------------------------------------
08.00 08.50 1
08.00 09.40 43
08.00 10.50 2
What I want to get from the algorithm is, to count the time that occured on the same period, e.g. on the time of 08.00, it's occured 46 event (see the yellow colored row).This is my algorithm:
Dim ColumnLength As Integer = GV.Rows.Count
Dim TimeStart(ColumnLength - 1) As Integer
Dim TimeEnd(ColumnLength - 1) As Integer[code]......
I am developing an application that prompts an user for doing certain tasks in a form. What i want is that a certain message should be popped for a certain amount of time and then close (probably say 2 seconds or so). I tried doing it with message boxes but they do not close on their own as they are designed to be modal (to wait for user command ). i do not want to display the text in a textbox of listbox. Is there a certain way i could do this.
View 4 RepliesI have looked through couple of threads about making the trial application to be expired within certain time. Most of the advice is to set a timer and store it in somewhere in the system with encrytion. Then later decrypt and compare with the date installed in the system.
View 12 RepliesI know about DateDiff and TimeSpan. I am doing a project. I save a date in the registry. Now, I have to test this date against today's date and calculate the differences in minutes, hours, days, months, weeks and years.
I save the date in the registry like this:
Application.UserAppDataRegistry.SetValue("Date", [Date])
I then made a sub to calculate the differences:
Private Sub Calculate()
Try
Dim DateGen As Date
DateGen = CType([Date], Date)
Select Case TimePeriod
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As you can see, based on the difference between these dates ( today's date and the registry date ), a sub gets called and the program continues. Unfortunately, the minutes and hours never calls the RandomAlpha sub. How can I calculate the difference in minutes, hours etc.????
I'm making a financial application, I need the application to close if the user did not do anything for a cretin period of time.
View 9 RepliesI have developed a system which i want my client to use for trial purpose for 1 month. i want a software or an idea to time the system for that period after which it should cease to work.
View 1 RepliesI have the below code. What happens if the Upload method takes more than one minute for completion? Does the timer kick off another call to the Upload method immediately after one minute is over or Does it wait until the method finishes executing? I am implementing this as a windows service.
Protected Overrides Sub OnStart(ByVal args() As String)
Dim tmr As Timer = New Timer(New TimerCallback(AddressOf Upload), Nothing, 1000, 60000)
While Not tmr Is Nothing
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ive been wanting to put some kind of self destructing code in my application that deletes itself after a given period of time. (like 2 weeks)
View 3 RepliesWhen displaying a message to the user using 'msgbox', is it possible to have the msgbox close after a set period of time, if the user has not clicked on OK?
View 2 RepliesI'm trying to connect a remote mysql database. I'm doing it from a vb.net 2005 application with a connector mysql.data.dll What's happening is, suppose if I try to connect thrice it connects twice and once throwing an exception that says A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond. there's nothing wrong with the code, otherwise it would never have connected
View 4 RepliesUsing the Windows Media Player control that I called, AxWindowsMediaPlayer1 com is it possible in VB.Net to start playing a track from a certain point of time?
So I have a 5 min track, but I want to start playing it from 3min 33secs for example.
how do you pass a pause and un-pause to the control?
Out of curiosity, is there a way i can make a program stop or pause for a period of time (which i would choose) before continuing the code WITHOUT a timer.I think I've seen this done before, but I'm not positive.Also note that I'm talking about a forms application (not a console app if that would be any different.)
View 3 RepliesI have a situation that has puzzled me for weeks. I am running logic that does a bit of back and forth to and from the database for each time it is executed (about 20 times). The problem is that the same code works about half of the time. What could possibly be the reason for the difference in execution performance and how can I better shore that this problem is checked?
View 1 RepliesI'm making a IM LAN Chat, and I don't want to limit it to a specific number of chats that can be open at any given time (By re-producing the forms and setting variables once a chat is open).
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