VS 2010 - Using CPU Hardware ID As Activation Formula
Mar 24, 2011
I am going to publish my program soon. As for the product serial activation, I have combined the user machine's CPU ID and the MAC Address to make a formula. Here is the class code to find processor ID and MAC which I have found on net and used :
Friend Function GetProcessorId() As String
Dim strProcessorId As String = String.Empty
Dim query As New SelectQuery("Win32_processor")
Dim search As New ManagementObjectSearcher(query)
Dim info As ManagementObject
[Code] .....
There a few questions I want to ask to be sure about my program activation :
- These 2 function code, Are they safe to use ? Is there any possibility that one of them or both doesn't return anything ? ( because of user permissions,os type, etc...)
- Is it possible that somehow the user machine won't have MAC Address?
- Is Proccessor ID a Unique serial for each machine in the world?
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Feb 21, 2011
It's being some years since i actually wrote a program in VB, last time was VB 6.So it's being a long time, and things have changed a bit.And i am still very rusty, so i need to get back into it.I got a few problems which i cant remember very well.1st question.I got several text boxes, in these text boxes there will be prices of products.The very last text box is inactive, and is supposed to show the total of all of the above.I have to declare the text boxes to contain numeric values only, so there will be no mistake when doing the calculations.But i cant remember what it was, and what the best option is to add up all the values from the text boxes.
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Apr 12, 2011
I have 2 coordinate points, lets say C1 and C2.
C1 has a circle around him, with a diameter of lets say 20px.
Now the problem is, i need a formula to check if C2 is in the circle of C1.
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Jun 10, 2011
I'm using Visual Studio 2010 (VB.Net) and Open XML SDK 2.0. How do you insert a formula into an Excel 2010 worksheet? When I do this I also wish to set the CellValue property of the cell to a DBNull or EmptyString to force Excel to recalculate the cell when the user opens the workbok.
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May 3, 2012
I need to use regex to check if the user add the numbers of phone in this 'Formula'
0911111111,0922222222,0933333333
must the number start with '09'
must the number contains '10' characters'
must the numbers seperated by Comaa ','
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Feb 20, 2009
I want to place two radio buttons in so I can select one of them to use one formula, and then select the other to use another formula. I want to use the I=P(1+r)^n formula and I=P(1-r)^n formula with the radio button text showing Appreciation and Depreciation.
Heres my copy of the original code.
Public Class Form1
Private Sub cmdExit_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdExit.Click
End
End Sub
[CODE].......................
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Dec 12, 2010
Just looking at various ways to do so.I came accross an article which unfortunatly I can't find anymore. It explained it like this. (I'll try remember all of it)1) Put activation key in textbox12) Press button3) Checks with the FTP server if the title of a file (In the this case the license key) in the FTP server.4) If the file doesnt exist then a message box comes up incorrect license.4b) I the file does exist then my.settings.activate = 15) Next time its loaded up, the program checks if my.settings.activate = 15b) If not then an activation key must be put in and proccess starts again.
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Apr 16, 2012
i have installed my program on several computers and it works but for some reason on this one computer it doesn't work.i attached the error log. i can't figure out why it won't run. it installs ok.
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Sep 27, 2011
Let's say we have a controltab with two tab. The first tab contains textboxs where entry values are entered On the second tab are textboxs that display the results. I have noticed that if I fill up the entry values and create the binding between each textbox and their property and then I destroy it (without clearing the textboxs), the textboxs of the second tab will not display any result. I have this exemple here BindingAddition.rar
[Code]...
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Jan 11, 2011
An application I'm working with registersun-registers a group of dll's using regsvr32.
System.Diagnostics.Process.Start("regsvr32", "somedll.dll /s")
This worked fine on Pre Vista systems but this will not work on Vista7 due to UAC.
Is there an alternative method to register dll's programatically without needing elevation?
If it help's the dll only needs to be registered for the current user, could adding details to the registry directly solve this?
(The application runs several versions of a legacy application, these dll's are swapped out depending on the version being loaded)
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Sep 22, 2011
I have devices with unique serial number (string incremetation) ex : AS1002 and AS1003. I need to figure out an algorithm to produce a unique activation key for each serial number. What would be the best approach for this ?
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Jan 17, 2010
I have made some custom .dll's or components and then I downloaded custom webkit component and it didn't work perfectly(I mean that I always get some error code with this error: An error occurred creating the form. See Exception.InnerException for details.The error is: Failed to initialize activation context. When I try to debug the project). And if I have made a new project, and make a component with user control, and I haven't saved it yet, it will work fine, but until I save it then it will give me a designer error.
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Dec 10, 2011
Is there any detailed information if Visual Basic uses a run time stack as well as the format of the activation record the stack, return address, parameters, local variables, etc
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Mar 31, 2012
Is there any detailed information if Visual Basic uses a run time stack as well as the format of the activation record the stack, return address, parameters, local variables, etc...
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Dec 16, 2010
In Excel 2010 (but also in older versions you can find a nice functionality - auto filter. When you just put some data in a row and press CTRL+SHIFT+L you activate Auto Filter. Now you press the down arrow and you get what I need... A new window appears. This window include buttons ordered in something like a context menu a textbox and a checkedlistbox. The windows definitely is not a classic form, because when you operate with the controls on it, the original excel windows is still the active window. The window can also be drawn outside of the main excel windows.
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Apr 30, 2012
I have created an Excel Ribbon Addin that has some custom features that will benefit a relatively small business niche. The target companies number less than 1,000.I don't want to limit any one company's usage of the Addin...meaning I want them to be able to install and use the Addin as often as they need to, for as long as they need to, on as many computers as they need to.
The thing I want to prevent is sharing of the Addin. There are family members in this industry, that own different companies in different parts of the country...there are close friends in this industry that each own different companies. I want each company to purchase the Addin instead of share it.I have created a License Agreement that they have to agree to before the Addin is installed. But, that is as far as I have gone with it at this point.So, this leads me to 2 questions:
1. Is it worth the investment and effort to create this type of limitation for such a small market?
2. If so, what is the best way to go about accomplishing this?
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Feb 20, 2010
This is how I handle online activation for my application the problem is that this is very poor security because i display my Username and Password. I was thinking of using Myslq but i also have to input the Username and the password into the application. What other ways do big companies like Kaspersky handle online activation.
My code
Try
My.Computer.Network.DownloadFile("FTP SITE" + textbox1.Text + ".txt", "C:" + textbox1.Text + ".txt", "USER", "PASS")
Dim auth As String = My.Computer.FileSystem.ReadAllText("C:" + textbox1.Text + ".txt")
If auth = Textbox2.Text Then
Kill("C:" + textbox1.Text + ".txt")
[Code] .....
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Apr 13, 2009
i was searching this earlier but couldnt find it:i want to set hotkey for my timer to activate only when my left mouse button is down, else timer is inactive
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Jun 11, 2011
How do I save the information from each activation of the code inside the loop. I decided to try this a different way. I also need to know how to create colums in a label?
For countInteger As Integer = 0 To 3
seatsSoldInteger = ticketDetail(countInteger).seatsSoldInteger
costDecimal = ticketDetail(countInteger).costDecimal
totalTicketSalesDecimal = ticketDetail(countInteger).totalCostDecimal
[code].....
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Oct 18, 2011
I have asp.net web site. I added reference of Microsoft.Practices.EnterpriseLibrary.Logging.dll to the site. in web.cofig file, I defined like below.
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<configSections>
[code]....
When I run the code exception happening below place.
defaultWriter = EnterpriseLibraryContainer.Current.GetInstance<LogWriter>();
//errr: Activation error occured while trying to get instance of type LogWriter, key ""
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Jul 30, 2009
I want to protect the Software by making it to ask for a Activation Key when the software is installed in a computer - I have seen commercial programs asking for Activation Key and for this I should send a Number shown after installing the software in the Computer.I want to know how to make this in a program. Can anyone give the Code and etc for MS Visual Basic 2005.
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Jun 2, 2011
check the attached 2 file. one is .docs file another is .bmp file. Problem is that i want add that formula in database through vb.net. what will be data type in sql serve? and how to manage in vb.net??
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Feb 25, 2009
I use the following columns stored in a SQL table called tb_player:
Date of Birth (Date), Times Played (Integer), Versions (Integer)
to calculate a "playvalue" (integer) in the following formula:
playvalue = (Today - Date of Birth) * Times Played * Versions
I display upto 100 of these records with the associataed playvalue on a webpage at any time.
My question is, what is the most efficient way of calculating this playvalue given it will change only once a day, due to the (today-date of birth) changing? The other values (times played & versions) remain the same.
Is there a better way than calculating this on the fly each time for the 100 records? If so, is it more efficient to do the calculation in a stored proc or in VB.NET/C#?
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Oct 9, 2009
I am reproducing a program written in C to vb.net and I am getting different results on a math formula. I am sure it is something simple that I am overlooking. Here is the formula in C
num = (10 * 9 * 80900 * 0501) & 0xffff;
Here is the same formula in vb.net
num = (10 * 9 * 80900 * 0501) AND &HFF
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Apr 1, 2009
how to generate the formula. want to use arraylist to store and for loops to loop the formula til the system can detect which staff it should giv the ticket to..below is the scenario:this is a helpdesk system..so each ticket they submit muz be auto assigned to a staff to attend their ticket..each staff has a different quota..so i came out wid this algorithm on hw to determine who the ticket shld go to..
for ex: i set one ticket's quota is 7%
staff A's quota - 47% staff B's quota - 35% staff C's quota - 18% so to knw how many tickets A get den B getx 1 ticket and how many tickets B get den C gets 1i came out wid a calculation like this -
Staff A - 47% / 7% = 6.7(max no.of tickets he can receive foe a period of time)
Staff B - 35% / 7% = 5
Staff C - 18% / 7% = 2.5
so first i compare A&B whr i took 6.7/5 = 1.3 -> so every 1.3 ticket A gets,B gets 1 ticket den i compare B&C whr i took 5/2.5 = 2 -> so every 2 ticket B gets,C gets 1 ticket i wanna implement this concept in my code..but i dunno how to come up wid this formula..
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Apr 9, 2011
On my program i am trying to make a activation form, so in order the program to activate the user has to enter a product code on the package but. I know how to code it and everything but I have the code put a "-" every 4 characters that the user types, but now i need it to add a "-" every 5 character that the user types. Here is the code:
[Code]...
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Jul 3, 2009
First the requirements: By management requirements, I can't use open source code. I need the users to define their own formulas for a project. My users don't know how to code. The formulas need to be saved somehow, and being read later. I need to debug the formulas written, so I need to be able to see and understand them. The formulas used are quite specialized and specific (actuarial formulas). Adding new formulas (functionality) must be done in fast and maintainable way.
[Code].....
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Apr 25, 2012
I need a code that will convert decimal to binary. My current code doesn't work and just crashes, any suggestions on what I should do
For i = 1 To 17
Me.lstDec.Items.Add(i)
[code].....
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Oct 11, 2011
Using VB.Net (Windows Application)[cod]e...
f1 = a + b * c means i have to pass the value a = textbox1.text, b= textbox2.text, c = textbox3.text
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Jun 11, 2010
I have a formula, found in an Excel sheet that I have to convert to vb.net...I can't figure it out, eventhough it's seems a quite easy formula to me.the formula is: Mod(X + Int(Y/100000);20)In fact if I render some values...and use the Mod function in Excel or in VB.NET it gives me other results.
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