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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.
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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!