VS 2008 Locking An Application After A Limited Period?

Sep 13, 2009

I am writing an application that I want to give to a select number of customers.

What is the best solution to use so that after the trail period (1 month) the application will no longer work.

I was thinking that if they are interested in purchasing the software I will give them a license key or something, to unlock the application. However, I would like to make this unique to every computer.

I am have a very limited budget as I am working on my own. So is there any free 3rd party products that does this?

I was thinking of writing the date the application was installed in the system registry, and each time the application loads it will check if this date is over one month. However, the user could turn back the date on their computer.

Another, solution I was to have the application run some many times. For example, the user can only run 30 times. Then it will lock.

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Write A Windows Forms Application That Responds To A Limited Set Of Voice Commands?

Mar 11, 2010

The goal -- use VB.Net to write a windows forms application that responds to a limited set of voice commands after the user says a keyword, (such as "Wake Up"). I have the following code I am using from another site but I am getting an error I do not understand (nor do several others who posted comments at the same site.)

Imports System
Imports System.Data
Imports System.Deployment

[Code].....

If I had any understanding of how to create a grammer file I MIGHT be able to avoid this error completely, since I am only interested in a few voice commands (maybe 30), not the whole 60,000 word dictionary.

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C# - Application Suddenly Locking Up

Jan 10, 2012

i have this application, that creates various custom AppDomains, each app domain executes a assembly and its dependencies, like a plugin, a separated assembly, that manipulates database, own resources, etc.

the application runs fine for a while, but suddenly, it locks up... the process does NOT die, it just freezes, i ran a remote debugger on top of it, on the thread window i can see EVERY thread, they are with the status "running" (not "thaw") but, in the same place, not executing. i can pause and run the debug, and it remains in the same place. there are NO locks, synlocks, monitors, on the code and the code for loading the appdomains is very simple, no big deal on it. like i said, its working, but after a while, it locks up. Any ideas on this environment?

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Locking Application To HWID And SmartAssembly?

Nov 27, 2010

1) How do I lock my application to user's HWID?I want it to work this way: when a certain user opens my app, it automatically scans for his hardware ID and lock the application to it so noone other than the user can use the app.

2) I'm planning to use SmartAssembly trial version to obfuscate my code, will this affect my application in any way? Like, crashing?

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How To Stop Application If Not In Use For Period Of Time

Mar 28, 2012

How I can stop my application if not use it for a period of time ?

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Possible To Have A Delay Period Of 17nS For An Application

Jun 10, 2011

is it possible to have a delay period of 17nS for an application in vb.net???

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Make A Trial Period Application In VB 2010?

Oct 23, 2011

how can i make a trial period application in visual basic 2010

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Make An Application Expire Within A Certain Time Period?

Oct 17, 2009

I 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.

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Application To Close If The User Did Not Do Anything For A Cretin Period Of Time?

Jul 21, 2009

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.

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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)

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VS 2008 Locking A Remote Workstation?

Sep 30, 2009

how can i lock a remote workstation?

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VS 2008 Locking The Tab Page Of A Tab Control?

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Is it possible to lock the tab page of a Tab control ? There are cases where a specific page should be shown and the user should not acctdentally change the tab page . I know I could set as False the property Enabled of the Tab control , but that would ... well actually would disable the page , which I don't want to ...

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VS 2008 Read The Log File Without Locking It?

Feb 5, 2010

I'm writing a log parser which is reading a log created by a game. This log can be written to many times a second. My problem is that my program is preventing the writing of the log at times. Is there anyway I can read the log file without locking it?

Sub readLog()
If readyToRead Then
If FileInUse(fileName) Then Return
readyToRead = False

[code]....

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VS 2008 Value 2.5 : Put This Value In A Variable But Without The Period?

Jun 18, 2010

I have this value 2.5 and i would like to put this value in a variable but without the period:

Dim value1 as Double
Dim value2 as string
Value1 = 2.5
value2 = Int(value1)

I had try Int but just return the 2, and that i want its:

value2 = "25"

Any instruction that do this directly?

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VS 2008 Amount Of Weekdays In A Period?

Mar 22, 2011

I need to find out how Weekdays there are between two days.how can i do this? I know i can not just divide the Amount of days by 5 (for the weeks) and then subtract (2 * Amount of weeks)' (for the weekend), because the first date may start on a Thursday.

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VS 2008 Get The Two Numbers Right Of The Decimal Period?

Sep 9, 2009

I was wondering how can I get the two numbers right of the decimal period? If I had 2.85874125639, I would want to get this: 2.86 since it was rounded...

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VS 2008 - IDE Bug - Make Certain Forms Automatically Close After A Timeout Period

Sep 14, 2010

I caused the VB.NET2008 IDE to do something extremely odd and unintentional with some code I was writing. As some of you know, I mostly write programs for industrial equipment. On one of our products, I needed to make certain forms automatically close after a timeout period. To do this, I began programming a usercontrol with a Timer on it (interval = 1000) and a ProgressBar. Timer.Enabled was set to the Enabled event so I could toggle it. When the control counted to it's timeout period, it would call Me.ParentForm.Close

So I build my project, and drop it on a form in the IDE and I see it begins counting! Huh... I had no idea timers were active in the IDE. I wonder what happens when it hit's it's trigger? I figure probably nothing since Me.ParentForm was actually the designer. When it triggered, the whole IDE crashes without save. I tried it twice now. Here's my

[Code]...

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VS 2008 Make A Program Stop Or Pause For A Period Of Time Before Continuing The Code Without A Timer?

Jun 13, 2009

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.)

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VB 2008 - Make Button.click Event Perform Both Enter And Period(del) Keys On Numerical Keyboard

Nov 3, 2009

How Do I Make Button.click Event Perform both the enter and period(del) keys on the numeric keypad? [Code] Case Keys.Enter and Case Keys.Separator do not work. Nor does anything like Keys.OEMPeriod for the period(del) key. I've also tried calling the enter key in a KeyPress event etc. But to no avail. Any ideas? I'm trying to mimic Windows calc.exe for a school project and thought I'd try throwing in a few extras such as numeric keypad functionality.

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I have just installed Visual Basic 2008 Express.Unfortunately, the built-in (offline) help is very limited. For example, such a basic function as IsNumeric() is not found.Is there a way to expand the help in this Express edition?

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DCOM With Limited Ports

Dec 1, 2011

We need to put a firewall in between our servers and a couple of clients. To do this we need to limit the number DCOM ports available so that we know what ports to open on the firewall.The question I have is do we need to limit the number of ports on all the machines inside the firewall as well as outside. This would cause an issue as we have lots of machines which would need to be modified.If DCOM has the intelligence to negotiate on port 135 which port is available on both machines which need to communicate, we will only need to modify the 2 machines on the outside of the firewall.

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Sep 3, 2011

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C# Switch Statement More Limited Than .net 'case'?

May 4, 2011

I was reading an interesting article here and it made an interesting point about the 'case' statement in vb.net vs the 'switch' statement in C#, which I've pasted below:The following Visual Basic Select Case statement can't be represented in C# with a single switch statement:

Dim Condition As Integer = 55
Select Case Condition
Case 1, 3 To 5, 10, 12, 14, Is > 50

[code]....

I've always found the switch statement in C#, with dropthrough and consequentrequirements for a break in each case, to be a bit unwieldy. Is there any reason they haven't enhanced the switch command to allow these situations? W

EDIT AFTER CLOSE: I'm surprised this was closed, really. With the number of extension methods and helper classes I've found online for other things, I thought an enhanced 'case' would be a good chance. I somewhat hoped a luminary such as Jon Skeet may have commented on the background reasoning, rather than the individuals below who've obviously thought 'religious debate' as soon as more than one language is mentioned.

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Dragging An Object In A Limited Area?

Aug 26, 2011

I want to create a dial which is basically a circle that I can drag around in a circular motion. Ive looked at using the code in an earlier post which allows you to drag items around a screen but I cant figure out how to confine the movement so it only allows the user to drag this circle around in a circular motion. Any coordinate altering I do just looks snappy.

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How To Fix Limited Columns In DataGridView In VB 2010

Jan 12, 2012

How to Fix Limited Columns in DataGridView in Visual basic 2010

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IDE :: File Permission For Limited Users?

Sep 6, 2009

I have created Installation package and installed in Admin login. When i am logging into limited user i cannot write any files which i was created as Admin user. I want to update the files from limited user account which was created from admin user.

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Limited SuggestAppend Items For A Listbox Or Textbox

Oct 10, 2010

I know we can easily limit the number of items in a listbox to be listed. But how to limit the items that are suggested. Like for example, when i type "Co" (using AutoComplete feature ) it will automatically suggest me up to 20 - 30 items that has the word "Co" in it. But i want to limit it to 5 items only. The suggested 5 items, are the top 5 of the list.

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