clsCommandButton: Microsoft Excel VBA - Run-Time Error '-2147024809 (80070057)' - vba

Question

I want to add dynamically CommandButtons to my Userform within the For-Loop. How can i get add new CommandButtons in the For-Loop?
Dim CommandButtons(5) As clsCommandButtons
Private Sub UserForm_Initialize()
Dim zaehler As Integer
For zaehler = 0 To 4
Set CommandButtons(zaehler) = New clsCommandButtons
Set CommandButtons(zaehler).cmdCommandButton = Me.Controls(zaehler)
Next
End Sub
And This is my class:
Option Explicit
Public WithEvents cmdCommandButton As CommandButton
Private Sub cmdCommandButton_Click()
Dim sFilepath As String
With Application.FileDialog(msoFileDialogFilePicker)
.AllowMultiSelect = False
.InitialFileName = ActiveWorkbook.Path & "\"
.Filters.Add "TextFiles", "*.txt", 1
.FilterIndex = 1
If .Show = -1 Then
sFilepath = .SelectedItems(1)
End If
End With
Cells(c_intRowFilterPathStart, c_intClmnFilterPath) = sFilepath
End Sub
I don't know how to handle this Error. How can i fix this?

Answer 1

I assume you get the error because you're accessing a control that doesn't exist. Note that the controls are counted from 0 to Me.Controls.count-1, so probably your issue is solved with
Set CommandButtons(zaehler).cmdCommandButton = Me.Controls(zaehler-1)
But I guess a better solution is to name your buttons and assign them by name:
Set CommandButtons(zaehler).cmdCommandButton = Me.Controls("CommandButton" & zaehler)

Answer 2

Define the CommandButtons collection as a Variant:
Dim CommandButtons(15) As Variant, instead of Dim CommandButtons(15) As clsCommandButtons.
In this Variant, you would put your CommandButtons. This is some minimal code, that would help you get the basics of what I mean:
CustomClass:
Private Sub Class_Initialize()
Debug.Print "I am initialized!"
End Sub
In a module:
Private SomeCollection(4) As Variant
Public Sub TestMe()
Dim cnt As Long
For cnt = 1 To 4
Set SomeCollection(cnt) = New CustomClass
Next cnt
End Sub
From this small running code, you can start debugging further :)

Answer 3

I think your problem is in the Me.Controls(zaehler) part. zaehler starts at 1, but Me.Controls(...) starts at 0.
Set CommandButtons(zaehler).cmdCommandButton = Me.Controls(zaehler - 1)
would probably solve it

Answer 4

Dim a() As clsCommandButton
Private Sub UserForm_Initialize()
Dim c As Control
On Error GoTo eHandle
For Each c In Me.Controls
If TypeName(c) = "CommandButton" Then
ReDim Preserve a(UBound(a) + 1)
Set a(UBound(a)) = New clsCommandButton
Set a(UBound(a)).cmd = c
End If
Next c
Exit Sub
eHandle:
If Err.Number = 9 Then
ReDim a(0)
End If
Resume Next
End Sub
With a class as follows
Public WithEvents cmd As commandbutton
Private Sub cmd_Click()
MsgBox "test"
End Sub