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 ?
View 5 RepliesI am trying to draw textboxes when the user enters the amount of textboxes to be drawn on one form and the textboxes get displayed on the another form. I have found these codes online but it works with inbuilt codes I guess. That is, the number is already hard coded in the form.
[Code]...
I have this program generating a firstname and lastname from a file. When I run this program I enter information in three textboxes. The first two are the salary low and high(salary1.text, salary2.text) and the last one is the number of "copies"(copies.text) that I want.. When I put a number such as 10 in the text box it outputs some of the same names. The firstname file has around 100 records and the lastname file has about 1000 records Why is it generating the same name The problem is even worse if I do something like 1000 copies.. it outputs the same thing 8 times and then does something different another 8 times
Public Class Form1
Dim sex As String
Function randomfirstname()
Dim infile As IO.StreamReader
[code]....
With this code i check the serial serialnumber of a usb stick.
[code]...
It is not perfect because the programma crash when there is no usb in de PC.But how do i search fot the sctick if it has a name , for example PPH ? And not G: , because it is everytime a different station.
Something ive wondered about as long as ive had an interest in making apps is generating serial numbers for software projects.Im wondering how is this done by the pro's so that someone can put a key into an app and without being connected to the net it knows the key is valid by using an algorythm.Id like to make something like that for the sake of learning how. I realise more and more programs now "call home" at the point of entering a key or to "activate" as with MS office and windows etc, but id like to start at the old school way of doing it.Generating the alpha numeric keys and also checking them.
View 10 RepliesI heard that you have to add some code to a random number generator
results(1) = Int((5 - 1 + 1) * Rnd() + 1)
so that if it is used again and again it keeps generating new numbers as apposed to what this piece of code does by itself which is creates the same number every time.what is the code?
Send hdd serial number (not volume number)code in vb.net 2008.
View 3 RepliesI'm wondering how I would go about generating a random number in VB.Net. As I am developing an ATM system for a bank, a randomly generated 4 digit PIN code would have to be assigned to each person.
View 2 RepliesI am trying to make a number be generated as this Windows Form loads, then the user guesses by entering a number and clicking a button to check whether it is correct or incorrect.
I have the code complete, I'm just confused on how to declare the random variable outside the button sub procedure so it only generates one time.
Here is my code.[code...]
i want to auto account generate account no in their name format for eg if the account name is ABC Travels account no will be A0005 if account name is XYZ Travels account no will be X0003 etc for this i want to know 2 things.first of all how to get 1st alphabet from a textbox for eg. textbox.text is QWERY so how to Q from it.Secondly from database data how to seperate Number from word. for eg if last account no is A0009 Now how to seperate 0009 or how to add +1 in A0009?
View 4 RepliesI'm using VB.NET 2008 Express Edition and I'm trying to create a simple program that will roll a number of dice I choose. It does this by generating a random number within a specified range (I'm rolling 3-sided dice in this case so I'm generating numbers between 1 and 3) and adding each number to a textbox to create a total of all the dice rolled so far.
This is my
Private Sub butRoll_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles butRoll.Click
Dim RandNum, i As Integer
Dim RandomClass As New Random()
'if at least one dice is rolled
If txtD3.Text > 0 Then
[Code] ......
Now the problem I am having is that although my random number generator is generating the right numbers (confirmed by checking the txtLastRoll textbox), when I add it to txtTotal, it seems to be getting another number from somewhere and adding that to my random number then adding it to the total and I have no idea how this is possible! txtTotal always starts as 0 but txt1 is not showing that. Normally I would just set txtTotal to 0 there but if I do that, I won't be able to add the numbers together. I've tried finding a pattern in the mystery numbers appearing in txtTotal but they just seem to be random.
I want to generate a serial number in this format: INDDMMYY000001, INDDMMYY000002, INDDMMYY000003, ... I can generate INDDMMYY using following code: lblNoSiri.Text = "IN" + Date.Now.ToString("ddMMyy") However, I don't know how to generate the last six digit number. I only can generate number without zero in front of it. How to create the number with fix number of digit?
View 4 RepliesI'm working with a random number that generates a price for a house between 1 and 100 dollars (obviously very realistic).
Dim Housecost As Integer = (Int((100 * Rnd()) + 1))
My problem is that I put that number in the public class which does generate the number but only once. But I need the number to be re-generated every time a button is clicked. Now I would put this code snippet in the buttons Sub but there are 3 other subs in the code that call for that randomly generated number and the only way that I know of that allows all the subs to read this random number is to put it in the public class. So how do I put the number in a place where all Subs can read it and can be called to re-generate when needed?
I want to generate random number, which is 9 digits including leading zero if the number is less than 9 digits, say 123 will be 000000123. I have the following code which doesn't include leading zero :
Dim RandomClass As New Random()
Dim RandomNumber = RandomClass.Next(1, 999999999)
i need to write a program to get the monitor's serial number i can get the model number for the life of me i cant seem to get the serial?
Private Function monitorName() As String
On Error GoTo Error_Handler
Dim objWMIService As Object
[Code]....
how do i get the cd manufacture serial number of each cd with vb code?
View 2 RepliesI'm using this code to generate machine signature. But it's take noticeable time to execute.
Public Shared Function DriveSN(ByVal DriveLetter As String) As String
Dim disk As ManagementObject = New ManagementObject(String.Format("Win32_Logicaldisk='{0}'", DriveLetter))
[Code].....
how to get USB serial number(Hardware ID) using VB.net?
View 1 RepliesDim Q As New SelectQuery("Win32_BaseBoard")
Dim SearchString As New ManagementObjectSearcher(Q)
Dim Info As ManagementObject
For Each Info In SearchString.Get()
TextBox1.Text += Info("SerialNumber").ToString()
Next
Its not working. I cant get my motherboard serial. Why?
what i want is to get the serial number of my cpu.i have used the code you give at your website,that refers at the function GetProcessorId, at 3 different pc's,where all these pc's were using cpu's of the company INTEL.so my problem is that i took the same ID from the 3 pc's i used. is there any way that will make me able to get a real serial number from a cpu,that this serial number is unique?i am using visual studio 2008.do you have something to suggest?
View 3 RepliesI am making my first application which involves WMI.. Using the documentation provided by MSDN and the Forums I have managed to get data related to the Win32 Class (Computer Name, Physical Memory, IP Address, etc..) Now I would like to get the Serial number of the monitor. I believe I have to use the WmiMonitorID Class. However, I do not know the Syntax to access the property of the same. I had used the code below for the win32 class. How do I modify it for the WmiMonitorID Class?
Public Function OpSys() As String()
Dim Str(4) As String
' ManagementObjectSearcher retrieves a collection of WMI objects based on[code]........
What is missing is a way that when I give a print click on the quantity of copies informed skirt with sequential numbers without repetitionex.: 10001, 10002, 10003
View 2 RepliesThe PC has VB program.The VB (running over XP operation system) communicates through USB to RS232 and communicates with electronic board.I found out the when the XP allocate port number more then (estimation) 16, the VB program have problem to communicate with the board.(The problem disappears when the XP allocate port number less then 16).Is VB can handle port number that have high number (like com 45 etc')? and how...Can I force the XP to automatic allocate port number less then specific value?
View 4 RepliesOS: windows 7 64-bit /Programming Language: Visual Basic.net on Visual Studio 2010 express edition.I have dataset with 4 tables each one of them is a datasource to a datagridview I want to add a serial number column to the datagridview so I made this
DataGridView1.Columns.Add("serial", "SER.")
For x As Integer = 0 To (ds.Tables("workers").Rows.Count - 1)
DataGridView1("serial", x).Value = (x + 1)
Next
It was working fine untill I added a relationship to the dataset the relationships codes were
Dim relation_WC As New DataRelation("relation_WC", ds.Tables("workers").Columns("id"), ds.Tables("cources_jun").Columns("workerid"))
Dim relation_WV As New DataRelation("relation_WV", ds.Tables("workers").Columns("id"), ds.Tables("vacations_jun").Columns("workerid"))
[code]....
I breaked point the debuging and I found that the serial number column I added is fine and has it's values, but when I reach the line relations.add(the_relation) the serial number column loses it's values and turn into an empty column with no
numbers in it....why this is happening?
Note: I added another relations but the only relations that clear the serial number column are the relations that has a datatable that is a datasource to the datagridview that has the serial number column.
How can I retrieve HDD Firmware Serial number in .net? I am able to retrieve HDD Serial number using WMI calls but not able to find any way to retrieve HDD Firmware Serial number.
View 3 Repliesi am making a program in visual basic 2008 and when the program first starts up on acomputer/device i want it to come up with a screen that asks for a serial key. i also only want the serial key (that i give to the person i am giving the program to) to be accepted once.eg. if he copies the program and gives it to another person who takes it home, they have to enter a new one (that i would have to give them). if they enter the same key as person 1, i want to deny access.
View 4 RepliesI would like to create a serial number for the software I created. I need a sample link.
View 7 RepliesI am using the following code to get the Motherboard serial:[code]But when i run the app, i get this error:A first chance exception of type 'System.NullReferenceException' occurred in Appname.exe..Object reference not set to instance of an object.
View 2 RepliesI would like to get the hard drive serial number.... to make a security feature for some software so it will only run on that hard drive... [URL]
View 13 RepliesDim SerieDisco as String Dim SerDis As New FileSystemObject Public Const LDisk= "C" SerieDisco = SerDis.Drives(LDisk).SerialNumber In VB6 I did use this code and get the serial number of Driver C: But now I am traslating the application to VB 2008 and I don't know how i do it? The methot in VB 6 function with hard Drive, CD and memory card (usb)
View 9 Replies