Author: Liew Voon Kiong

VISUAL BASIC is a VISUAL and Event-driven Programming Language. These are the main divergence from the old BASIC. In BASIC, programming is done in a text-only environment and the program is executed sequentially. In Visual Basic 6, programming is done in a graphical environment. In the old BASIC, you have to write program code for each graphical object you wish to display it on screen, including its position and its color. However, In Visual Basic 6 , you just need to drag and drop any graphical object anywhere on the form, and you can change its properties using the properties window.

In addition, Visual Basic 6 is Event-driven because we need to write code in order to perform some tasks in response to certain events. The events usually comprises but not limited to the user’s inputs. Some of the events are load, click, double click, drag and drop, pressing the keys and more. We will learn more about events in later lessons. Therefore, a Visual Basic 6 Program is made up of many subprograms, each has its own program code, and each can be executed independently and at the same time each can be linked together in one way or another.

Read more about Visual Basic 6 in our updated Visual Basic 6 lesson 1

All 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.

Read further to learn how to build an inventory management system in Visual Basic 6 by following the link below:

http://www.vbtutor.net/VB_Sample/inventory.htm

Database manipulation and management is an important component in Visual Basic programming. While creating databases are mostly handled by database software such Microsoft Access, MySql, Oracle, MS FoxPro and more, you can actually use a built-in database creation program in Visual Basic 6 called Visual Data Manager. 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.

To learn how to create databases using Visual Data Manager , following the link below:

http://www.vbtutor.net/index.php/creating-database-using-visual-data-manager/

There are many types of data that we come across in our daily life. For example, we need to handle data such as names, addresses, money, date, stock quotes, statistics and more everyday. Similarly in Visual Basic, we have to deal with all sorts of of data, some can be mathematically calculated while some are in the form of text or other forms. VB divides data into different types so that it is easier to manage when we need to write the code involving those data.

Read more about variables declaration in Visual Basic in our updated Visual Basic 6 Lesson 5

Error handling is an essential procedure in Visual Basic 2012 programming because it helps make a program error-free. Error-free code not only enables the programs to run smoothly and efficiently, it can also prevent all sorts of problems from happening like program crashes or system hangs.

Errors often occur due to incorrect input from the user. For example, the user might make the mistake of attempting to enter text (string) to a box that is designed to handle only numeric values such as the weight of a person, the computer will not be able to perform arithmetic calculation for text therefore will create an error. These errors are known as synchronous errors.

Therefore a good programmer should be more alert to the parts of program that could trigger errors and should write errors handling code to help the user in managing the errors. Writing errors handling code is a good practice for Visual Basic 2012 programmers, so do not try to finish a program fast by omitting the errors handling code. However, there should not be too many errors handling code in the program as it create problems for the programmer to maintain and troubleshoot the program later.

Read More by following the link below:
http://www.vbtutor.net/index.php/visual-basic-2012-lesson-20/