Here is some code to dynamically add controls to an Excel Userform, and add the code behind. The code added will make it display a MessageBox when the ComboBox receives a KeyDown
.
The code is somewhat commented, but let me know if you have questions :)
Option Explicit
Sub CreateFormComboBoxes(NumberOfComboBoxes As Long)
Dim frm As Object
Dim ComboBox As Object
Dim Code As String
Dim i As Long
'Make a blank form called 'UserForm1', or any name you want
'make sure it has no controls or any code in it
Set frm = ThisWorkbook.VBProject.VBComponents("UserForm1")
With frm
For i = 1 To NumberOfComboBoxes
Set ComboBox = .designer.Controls.Add("Forms.ComboBox.1")
'Set the properties of the new controls
With ComboBox
.Width = 100
.Height = 20
.Top = 20 + ((i - 1) * 40) 'Move the control down
.Left = 20
.Visible = True
.ZOrder (1)
.Name = "ComboBox" & i
End With
'Add your code for each module, you can add different code, by adding a if statement here
'And write the code depending on the name, index, or something else
Code = Code & vbNewLine & "Private Sub " & "ComboBox" & i & "_KeyDown(ByVal KeyCode As MSForms.ReturnInteger, ByVal Shift As Integer)" & _
vbNewLine & " MsgBox(""hi"")" & vbNewLine & "End Sub"
Next
'Add the code
.CodeModule.InsertLines 2, Code
End With
End Sub
'Run this
Sub Example()
CreateFormComboBoxes 5
End Sub
**Edit**
I figured I might as well add the other approach for adding controls dynamically to an Excel sheet. I'd recommend sticking to UserForms, but, here's a method that should help out when controls are needed in a Sheet.
Sub addCombosToExcelSheet(MySheet As Worksheet, NumberOfComboBoxes As Long, StringRangeForDropDown As String)
Dim i As Long
Dim combo As Shape
Dim yPosition As Long
Dim Module As Object
yPosition = 20
For i = 1 To NumberOfComboBoxes
yPosition = (i - 1) * 50
'Create the shape
Set combo = MySheet.Shapes.AddFormControl(xlDropDown, 20, yPosition, 100, 20)
' Range where the values are stored for the dropDown
combo.ControlFormat.ListFillRange = StringRangeForDropDown
combo.Name = "Combo" & i
Code = "Sub Combo" & i & "_Change()" & vbNewLine & _
" MsgBox(""hi"")" & vbNewLine & _
"End Sub"
'Add the code
With ThisWorkbook
'Make sure Module2 Exits and there is no other code present in it
Set Module = .VBProject.VBComponents("Module2").CodeModule
Module.AddFromString (Code)
End With
'Associate the control with the action, don't include the () at the end!
combo.OnAction = "'" & ActiveWorkbook.Name & "'!Combo" & i & "_Change"
Next
End Sub
Sub Example()
Dim sht As Worksheet: Set sht = ThisWorkbook.Sheets(1)
addCombosToExcelSheet sht, 10, "Sheet1!$A$1:$A$10"
End Sub