Excel VBA Cascading Dependent Drop Down Lists

Excel Filter With Dependent Combo Boxes And Pull Filtered Results Into Listbox

         ▶ We have used 4 dependent combo boxes (dependent drop down lists)  in this study again. We filtered the data on the sheet with combo boxes,and pulled filtered results into listbox. If desired ,the filtered data can be copied with button to other pages.

In the drop-down lists, the unique values  are sorted in  ascending order. We used ADO Connection to do all these operations quickly.

✔️ To be able to faster the filtering process, we used ADO  (ActiveX Data Objects). ADO is a subset of the Visual Basic programming language specifically designed for communicating with databases.

✔️ To avoid compatibility problems between 32bit and 64bit ,we organized codes as follows :

✔️ When the cursor hovers on combo boxes, they are opened as automatically. For this ,following codes :

✔️ Codes that allow conditional cascading dependent drop-down lists to run:

Private Sub Userform_initialize()
Set con = CreateObject("adodb.connection")
#If VBA7 And Win64 Then
con.Open "provider=microsoft.ace.oledb.12.0;data source=" & ThisWorkbook.FullName & ";extended properties=""excel 12.0;hdr=no"""
#Else
con.Open "provider=Microsoft.jet.oledb.4.0;data source=" & ThisWorkbook.FullName & ";extended properties=""excel 8.0;hdr=no"""
#End If
Call Combo("")
End Sub

Private Sub ComboBox1_Change()
If Not ComboBox1.Text = "" Then
    Call Listbox
    Call Combo(sql)
End If
End Sub

Private Sub ComboBox2_Change()
If Not ComboBox2.Text = "" Then
    Call Listbox
    Call Combo(sql)
End If
End Sub

Private Sub ComboBox3_Change()
If Not ComboBox3.Text = "" Then
    Call Listbox
    Call Combo(sql)
End If
End Sub
Private Sub ComboBox4_Change()
If Not ComboBox4.Text = "" Then
    Call Listbox
    Call Combo(sql)
End If
End Sub

Private Sub ComboBox3_Change()
If Not ComboBox3.Text = "" Then
    Call Listbox
    Call Combo(sql)
End If
End Sub

Private Sub ComboBox4_Change()
If Not ComboBox4.Text = "" Then
    Call Listbox
    Call Combo(sql)
End If
End Sub

Our template is ready for use .