I have recently completed a project using VB.NET 2008 express edition. Now I have to create a Product Key Generator for which I have no clue how that works. I wanna do it in such a way that the product can't run without the valid key and the key can only be used for one copy of the product. Also if possible how do we generate a Unique Product ID?
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Right now i have a form in the VB where there are 2 combobox in it. user can choose from a range of products that comes together with some description and these are to be stored in a database table.. when i retrieve these data from another form in VB, i'm only able to retrieve the first product and it repeat e same product in my second textbox.
View 6 RepliesI have 2 datagrids. One to show Product information and another for Product purchase details entry. Both share the same dataset. The dataset (ds) is filled up with columns from 2 table
ProductMstrTbl : ProductID, ProductName..
ProductDetailsTbl: ProductID, PurchaseDate, Amt, BalanceQty..
DataSet(ds) : ProductID, ProductName, PurchaseDate, Amt, BalanceQty.
The problem is that: Showing from dataset or entering new records into the dataset is no problem, but am not able to save the modified dataset into DataBase. SqlCommandBuilder failed to generate the corresponding INSERT, UPDATE command as the dataset has multiple base tables.
I have an application and an sql server.i would like to add Registration Code for the system.that should include the number of user
View 4 RepliesI have products form and categories form here i am creating new products and categories both have its own id and also i need to create one sequential no for both depend on current year when i create new [code] also when i create new product i want its sequentialno to be same.1
View 2 RepliesI am looking for a free utility or way to protect my software by requiring a Product ID (Which will be created when a customer requests a paid license) to use the application after a demo version. Like most shareware apps.
View 2 RepliesI'm trying to create a Lotto Number Generator.
My Form has a 3 numeric up down's 2 for the Range "Min & Max" 1 for the Nuber of Numbers that are supposed to be displayed in my TextBox "Mumber" 1 TextBox"tbNumbers" 2 Buttons The first just generates a single Number in the Range.
Dim SingleNumber As New Random
Dim NumberRange As Integer = SingleNumber.Next(CInt(Min.Value), CInt(Max.Value))
tbNumbers.Text = NumberRange.ToString
[Code].....
how to create a sine wave generator in vb.net
View 2 RepliesI need to create a random number genrator to generate a membership number when i open my sign up form. i need it to be shown in a text box.
View 9 RepliesI'm trying to create a random name generator, and in order to store all the names I'm using an SQL database. I've got the database set up (simple version just until I get it working) and here's basically what I want the program to do. My database consists of three main fields: Name, Gender, and Origin (along with corresponding ID's). I want the user to be able to use a drop down combo box to select the gender (m or f) and the origin (i.e. English, German, Chinese, etc.), have the program filter out any data not within these parameters, randomly choose one of the remaining names, and display it on the form in a label. I'm not quite sure how to get the combo boxes linked to the data set so that, when running, the chosen item filters the data.
View 3 Repliesi would like to create a password generator however i have a 2 text box aplication the top one is where the person types their e-mail address then select generate. the program must then use that address to generate a unique password only for that person if another email address is inserted in the top text box a total different password should be generated.
View 5 RepliesI have database in MS Access and this is Embedded to my program in VB2010 this is a Product Database now I try to create a reminder about my product expiration date
View 6 RepliesI've been trying to create a random brush color generator, Something like this code (it creates random colors...)
vb.net
Dim rnd As New RandomDim newColor As New ColornewColor = Color.FromArgb(rnd.Next(0, 255), rnd.Next(0, 255), rnd.Next(0, 255), rnd.Next(0, 255))
So I was assigned to create a calculator that can calculate the sum, product, difference, & quotient using an external class. Unfortunately my teacher isn't exactly the best and I'm new to VB, I know how to create a calculator in VB .NET but when it comes to external classes,
View 3 RepliesI am trying to create a Random Number Generator (dice roller) that will dump its results into an open chat window. I was lead towards using DDE but have never used it before. Is this the best method? if not, What is?
View 1 Repliesi wanted to create a random number generator that iterates through a series of number between an upper and lower bound. say between 1 and 100. Basically I want the number generator to pick the numbers randomly and then display them until all 100 numbers are picked without any duplicates. so thats easy I can code that. But what I don't know is how to show those numbers in the order they are generated on a windows form. So i have basically a variable that I will let be changed 100 times (or however many times I want, I don't want their to be a size constraint just using 100 as an example) and each time the number is generated I want it displayed on screen (in a list or something not sure what. Hopefully some type of scrollable list) and each successive number also to be displayed in same format beneath it so that I can see the list in its entirety. What type of form control do i use for that? I could do messagebox.show for each iteration but then user is required to hit ok after each iteration and that would obviously be a bad idea if user selected a large number to work through. Anyways, code isn't exactly necessary just point me in the right direction, i.e.what control (if any) to use.how to format the change in data?
View 7 RepliesI cant run my VB 2008 . it need register key
View 1 RepliesWhat is the product key of Visual Basic .net 2008?
View 2 RepliesI have a product table on datagridview and I would like to add checkbox to each product so that I can mass delete them instead of deleting them one by one.
View 1 Replieshow to get vb6 license nowadays?does the visual studio pro 2010have a downgrade path to vb6?
View 8 RepliesHow to put a product key for my Project?
View 5 RepliesI have a strongly typed DataTable in my app which is generated with a couple of SQL joins. I use it to display data in a human readable way.[code]....
View 1 RepliesThe GUI below shows the same product I inputted. If I inputted the same product and a new Quantity inputted, it will add to the current Quantity inputted. Same goes to the Total Amount will change.
View 12 RepliesI am a DCOM/Standalone Client-Server programmer who is now moving to eCommerce. I am building my first complete website for my wifes company and I have a design question for you gurus out there.
I looked at alternatives for shopping cart/product display and none of them meet my needs (e.g. ProStores). I wish to know which type of database you would use to have Many Products - Multiple Images per Product - possibly Multiple Vendors per product. I have begun a RDB using access as a prototype and I feel there was no faster method than inserting every product manually. Is there an alternative? And would you use a frame to display this data?
Would you store the images to the DB or a file reference on the host. I have begun with a file reference and truncated the path to only relate to where the file will reside on the host.
i have a inventory software in visual basic and sql server. there i have product info, product receive and product sales option. there i need to add a new feature in product. every pcs of product will have barcode which will be generated by my software at the time of receiving the product. and at the time of selling the product, the user will only scan the barcode by the device.
View 1 RepliesI have a product database....in which I have productid,prodname,inventoryvalue,reordervalueI have to design a email system that as soon as the product reaches the reorder level it shud generate an email....but the condition is there will be many products in the database....and on one button click it should send only one email but with all product names those reached the reorder level.... tried the below thing but completely a waste...
Private Sub btnEmail_Click(sender As System.Object, e As System.EventArgs) Handles btnEmail.Click
'Open Connection
[code].....
How do find windows xp product key with wmi in vb.net?
View 3 RepliesI need to get the product of the 2 columns in the same row but my problem is the values of my datagridview come from database and the number for rows is not fixed.
View 2 RepliesI want to make a product key for my software which should be Machine Specific , And With a Evaluation Period of x Days.
[Code]...
I am wondering how to make a product key as a license key for my VB.Net windows form application? Because at the end of the day, i would have to package it as a exe file and i would like to include in a license key for the user.
And also may i know how to package the whole project as a exe file such that after the user excute the installer, everything will run. like how you install windows xp like that.
