In this Lesson we fully explain and provide examples of Visual Basic built in functions, as well as showing how to create your own custom Programmer Defined Functions.
Creating Programmer Defined Custom Functions is an essential skill to master within any Programming Language.
Some people understand how Functions work very quickly and can grasp the concepts and program code setup very quickly.
Other people will initially find custom coding Functions both difficult and confusing and take longer to understand them.
In making this video lesson about Functions we have worked really hard to break down the concepts and the steps involved so that everybody can understand and code Functions in Visual Basic.
If you are a Teacher we suggest you click the downloads link below and get the lesson materials for your students.
Give these resources to your students and we think you will find that some of them will "get it" very quickly.
The other students need to watch the video for this lesson which goes through everything in full detail slowly step by step with repetition of examples.
The Practical Examples given in our Presentation are converted into VB.Net Programs; however the principles being covered are generic and apply to creating Functions in any Programming Language.
The Step by Step Guide which is available below for this lesson shows exactly how to create Programmer Defined Functions, using detailed practical examples.
Included in the Resources Download for this lesson are the full Visual Basic Code Listings, as well as the Form Designs and a Challenge Task for students to do.
Note that the example Lesson Images shown on this web page are basic Printscreens, whereas the actual original Images are of perfect clarity and quality in the downloadable PDF Guide for this lesson.
LESSON OVERVIEW
This lesson consists of a Video Presentation where we cover the following:
- Introduction
- South America Story of the White Hat
- Visual Basic Built in Functions
- Standard Format of a Function
- Functions with more than one Parameter
- How Functions work like a Vending Machine
- Programmer Defined Function for Sales Tax
- Setting up a Subroutine to call a Function
- Setting up and Coding the Custom Function
- Using a Function versus Program Hard Coding
- Differences between Functions and Subroutines
- Dates Function for Days Difference Calculation
- Adding Validation and Casting to Functions
- Learning Reinforcement Challenge Task
- Further Reading
- Doing our Website Programming Course
- Video Wrap Up and Outro
Watch the following YouTube Video Tutorial about Visual Basic Functions
We recommend you use the RESOURCE MATERIALS available below
to follow along step by step with the Tutorial Video.
The YouTube Video is free to watch as many times as you want, and the Lesson Build Guide including all required Images and full program code listing(s) are available at a small cost which can be paid for and downloaded using PayPal.
Before purchasing and downloading the following resources, check first with your Teacher or Instructor, as they may already have copies of these documents to give to you.
Our Programming Learning Modules are designed for complete beginners, and they have been extensively trialled with High School students learning Programming for the first time. They have a proven track record of being able to get everyone up and running with Microsoft Visual Basic - the world's most popular Beginner Programmer's language.
We highly recommend using the Step by Step Summary Guide as well as the other support materials to maximise learning outcomes.
Our students have found the Summary Guide to be far more useful than re-watching the Video, when it comes time for them to apply their newly acquired skills to Application Build tasks.
Prices for the Resource Package including the Guide, Images, Form Design, and full Program Code Listings are:
A Single Computer Licence for Personal Use is $AUD 2.50 (Approx $US 1.88).
A Site Licence for Business or Education Training for up to 30 people is $AUD 5.30 (Approx $US 3.97).
Licence Documentation will be included in your Downloads.
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