Using Visual Studio 2008 create a Visual Basic project. Add an menu strip and an About form and save the project. We will later add the code that will verify the trial period and registration key. Download Source Files and Binaries - 130.7 KB; Introduction.
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By Kenn Scribner ofIf you're reading this, you're undoubtedly a Windows software developer. And if you're a Windows software developer, you probably write software because you're passionate about, well, writing software. I'd happily code all day long just because I enjoy it, and I'm sure many of you feel the same way. Could there be a better way to make a living?Ah, but that's the catch. If you stop to consider the financial aspects of writing software, the plain truth is that while we may do this work because we enjoy it, we all have families to feed, bills to pay, and frankly we all like to go on holiday from time to time.
It's not an unfair observation, after all, and people using our software probably feel the same way about their careers. They work and want to be compensated for their efforts, even if secretly they love what they're doing and would work at it anyway.
Inventory Management SystemAll businesses involve inventory and need to manage it efficiently to ensure smooth running of the business activities and profitability.To manage inventory efficiently, business owners need to develop a good inventory management system. Building a sound inventory management system usually incur high cost.Fortunately, we can use Visual Basic 6 to build an inventory management system which does not require big capital, you can do it at home.In Visual Basic 6, there are a number of built-in database management tools which we can use to manage the data.To start building a good inventory system, we need to have a good planning.
First of all, you have to sit down with your client to get detail information about his or her businesses and establish the kind of system he or she wants. For example, you need to know what types of goods they are dealing with, the turn-over volumes, cost prices, selling prices and more.
Besides that, you need to know what kind of documents the system needs to deal with like invoices, delivery orders and more.After getting all the necessary information from your client, you can then start to build a database.Based on the number and types of products, you need to decide what are the variables or fields needed to be included in the database's tables.The figure below shows the inventory management system developed by us using Visual Basic 6.We shall use a hypothetical case to illustrate how to build an inventory system as shown above. Let's say our client is dealing with electrical goods.To design the database tables, we need to determine how many tables are needed. In order to keep things simple, we shall limit to two tables in our example.The first table shall be used to store the data of the inventory or stock in hand. The second table shall be used to record stocks coming in and stocks going out.The first table shall comprise the following fields:.
Category. Brand. Item Description. Model Number. Stock. Unit Cost.
Total CostThe second table shall comprise the following fields:. Date. Category. Brand. Item Description.
Model Number. Stock In. Stock Out. Unit Cost. Total CostIn our example, we named the first table Inventory and the second table Stock.After designing the tables, we can then proceed to create a database that comprises the two tables. We can either use Microsoft Access to create the database or we can use the built-in Visual Data Manager in Visual Basic 6.
Visual Data Manager can be used to create tables, add new data as well as edit data. Besides that, it can be used to modify table structure.
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To learn how to create database using Visual Data Manager, follow the link below:Step 2: Inserting controls into FormThe next step is to insert some relevant controls into the form for displaying and manipulating the data of the database. The controls to be inserted are ADO controls, DataGrid controls, FlexGrid control and various command buttons.
DataGrid controls and FlexGrid controls are used to display and store the data from the database tables. On the other hand, ADO is used to manipulate the database such as connecting the DataGrid and FleGrid to the database. As ADO is ActiveX-based, it can work in different platforms (different computer systems) and different programming languages. Besides, it can access many different kinds of data such as data displayed in the Internet browsers, email text and even graphics other than the usual relational and non relational database information.To be able to use ADO data control, you need to insert it into the toolbox. To do this, simply press Ctrl+T to open the components dialog box and select Microsoft ActiveX Data Control 6. After this, you can proceed to build your ADO-based VB database applications.In our example, we insert two ADO controls and name them AdoInventory and AdoStock respectively. The first is to deal with data in the Inventory table and the second is to deal with data in the Stock table.
We also insert two DataGrid controls and named them DataInventory and DataStock respectively. They are use to display the data to the user. Besides, we insert one FlexiGrid control to store the data and also to print out the data by connecting it to MS Excel spreadsheet.Step 3: Writing the CodeAfter inserting the necessary controls, it is time to write code to coordinate the controls and to manipulate the data. The first most important code for our program is to connect the ADO controls to the database when the form is loaded.
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March 2023
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