Excel vba class module tutorial 2024

[@m-squaredcontractors9720]

Thank you for the awesome video. Classes are very difficult to understand for me but am slowly getting there.

[@BusinessProgrammer]

Hope this video helped, let me know If there's anything you didn't understand.

[@chess-s1q]

From my own investigation, classes are a starting point for something a lot more complex: object oriented programming. OO has been covered by many but only using languiages such as C#, Java and Python. Would you be creating more videos, explaining concepts such as the SOLID principles and the 23 design patterns purely from a VBA persepctive (admittedly any design pattern requiring inheritance would not be avialble in VBA)?

[@BusinessProgrammer]

What I've demonstrated here is Object-oriented programming, it is true that VBA doesn't have inheritance, which is unfortunate, but it's still object oriented and has most of its benefits, I don't have any plans at the moment to go through those principles. I'm more about writing solid code (no pun intended) and building useful robust applications in a practical manner that result in real benefit fast, I'm not teaching computer science. I've just reviewed SOLID just now, and I can say that all of my code is teaching that by implication (with the exception of inheritance) without being explicit, OO is difficult enough for newbies to get a handle on especially classes and objects without going over the top on theory.

[@noviceprogrammer2011]

Nice video with clear explanations. However ..... when writing a program from scratch, one won't have the luxury of being told beforehand: 1. How many classes that would be needed to be created 2. What each one would be doing 3. How one class might relate to another class or classes So what would be useful is if you could create another video outlining the steps BEFORE any code is written, ie the thought proocess, how might one plan things (which I believe is called Data Modelling).

[@BusinessProgrammer]

With all due respect, your comment doesn't make much sense, no-one tells you before hand, how many functions you're going to need or how many variables you're going to need, you can work it out as you go along. which is one of the many advantages of object orientation, it's easier to make modifications to your program as you go along, because the objects have interfaces. Data modeling is more for (a) Databases and (b) large projects. This isn't a tutorial on data modeling it's a tutorial on class modules and object orientation and it's benefits, people who write VBA programs generally aren't being "told" anything, they're usually being creative to solve a business problem.

[@bumpersmith]

Thank you for the video. This is helping to get me closer to understanding classes. I work in MS Access, not usually in Excel. Can you possibly do a video on classes in Access?

[@BusinessProgrammer]

Classes work the exact same way in Access, You can do everything I did in VBA with the exception of how I got the data. What you need to do to make the code work in Access, is you would need to create a table (well you don't need to, but this is one way of doing it), create tables to represent what I did on the spreadsheet. Write a function to do a select query on the table and write the recordset to a one based array, or alter the code that I used to work with a zero based array, the array holds the data for the classes==>Objects. But other than that the code is the exact same. Is your VBA knowledge good enough to understand the above text ?

[@bumpersmith]

@@BusinessProgrammer Yes I understand everything and more. Just old enough to be stuck in my own thoughts and hard to break into thinking with new concepts.

[@kebincui]

👍👍