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VBA - CLASSES AND STRUCTURES VIDEOS▼
VBA - classes and structures videos | Excel VBA Part 35 - Class Modules
Posted by Andrew Gould on 13 October 2014
Class Modules in VBA allow you to define your own classes of objects. This video explains why that's a useful and shows you how to go about creating a class. You'll learn about the two class events: initialise and terminate, you'll see how to define properties, including how to create read-only properties and set default values. You'll also find out how easy it is to create methods for your class and how to use your class in your regular code.
There are no files which go with this video.
There are no exercises for this video.
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Hi,
Can you please explain why Method 1 fails but Method 2 works?
Method 1:
'This is Class1
Option Explicit
Public MyArr As Variant
Private Sub Class_Initialize()
ReDim MyArr(1 To 5) As Variant
Dim i As Integer
For i = 1 To 5
MyArr(i) = 0
Next i
End Sub
'This is in a standard module
Option Explicit
Sub Start()
Dim abc As Class1
Set abc = New Class1
abc.MyArr(1) = 10
Debug.Print abc.MyArr(1)
End Sub
After this line has been run:
abc.MyArr(1) = 10
in the Immediate Window, I see:
abc.MyArr(1) = 0
I expect it to be 10.
However using tmp variable seems to do the trick.
Method 2:
Sub Start()
Dim tmp As Variant
Dim abc As Class1
Set abc = New Class1
tmp = abc.MyArr
tmp(1) = 10
abc.MyArr = tmp
Debug.Print abc.MyArr(1)
End Sub
Thanks
Hi duggie, I hope it's OK to answer this question with a link but there's a good explanation of what's going on here https://stackoverflow.com/questions/25328975/array-as-a-class-member
I hope that helps!