How to filter data automatically into Listbox using two combo-boxes data as criteria with VBA.

On a user-form we have two combo-boxes. These combo-boxes are populated with unique data using the ‘dictionaries‘ concept.

The list-box is populated with filtered data based on selections in the two combo-boxes.

The image below shows the filtered data in the list-box.

Watch the video below before studying the VBA code:

Option Explicit
Private Sub cbRegion_Change()

Call FilterData

End Sub

Private Sub cbItem_Change()

Call FilterData

End Sub

Private Sub FilterData()
Dim Region As String
Dim Item_Type As String

Dim myDB As Range

With Me
If .cbRegion.ListIndex < 0 Or .cbItem.ListIndex < 0 Then Exit Sub

Region = .cbRegion.Value
Item_Type = .cbItem.Value

End With

With ActiveWorkbook.Sheets(“MYDATA”)
Set myDB = .Range(“A1:D1”).Resize(.Cells(.Rows.Count, 1).End(xlUp).Row)
End With

With myDB
.AutoFilter ‘remove filters
.AutoFilter Field:=1, Criteria1:=Region ‘ filter data
.SpecialCells(xlCellTypeVisible).AutoFilter Field:=3, Criteria1:=Item_Type ‘ filter data again
Call UpdateListBox(Me.MyListbox, myDB, 1)
.AutoFilter
End With

End Sub

Sub UpdateListBox(MyListbox As MSForms.ListBox, myDB As Range, columnToList As Long)
Dim cell As Range, dataValues As Range

If myDB.SpecialCells(xlCellTypeVisible).Count > myDB.Columns.Count Then
    Set dataValues = myDB.Resize(myDB.Rows.Count + 1)
   MyListbox.Clear ' we clear the listbox before adding new elements
    For Each cell In dataValues.Columns(columnToList).SpecialCells(xlCellTypeVisible)
        With Me.MyListbox
        .AddItem cell.Value
        .List(.ListCount - 1, 1) = cell.Offset(0, 1).Value
        .List(.ListCount - 1, 2) = cell.Offset(0, 2).Value
        .List(.ListCount - 1, 3) = cell.Offset(0, 3).Value
        End With

    Next cell
Else
    MyListbox.Clear ' if no match then clear listbox
End If

MyListbox.SetFocus

End Sub

Private Sub UserForm_Initialize()
Dim dict, key
Dim lastrow As Long
lastrow = Application.WorksheetFunction.CountA(Range(“A:A”))
With Sheets(“MYDATA”).Range(“A2:A” & lastrow)
dict = .Value
End With
With CreateObject(“scripting.dictionary”)
.comparemode = 1 ‘vbTextCompare – case of words doesn’t matter: apple is the same as Apple
For Each key In dict

    If Not .exists(key) Then .Add key, Nothing

Next
If .Count Then Me.cbRegion.List = Application.Transpose(.keys)

End With

With Sheets(“MYDATA”).Range(“C2:C” & lastrow)
dict = .Value
End With
With CreateObject(“scripting.dictionary”)
.comparemode = 1
For Each key In dict
If Not .exists(key) Then .Add key, Nothing
Next
If .Count Then Me.cbItem.List = Application.Transpose(.keys)
End With

End Sub

Further Reading:

Dictionary Object

Download a sample file: