combobox - Microsoft Access 中的多值组合框审计跟踪

Question

我正在尝试在 Microsoft Access 中获取多值组合框审核跟踪。但是，我没有得到相同的结果。

我试过这段代码。它适用于文本框，但不适用于多值组合框。

Option Compare Database
Option Explicit
Sub AuditChanges(IDField As String, UserAction As String)
On Error GoTo AuditChanges_Err
Dim cnn As ADODB.Connection
Dim rst As ADODB.Recordset
Dim ctl As Control
Dim datTimeCheck As Date
Dim strUserID As String

Set cnn = CurrentProject.Connection
Set rst = New ADODB.Recordset

rst.Open "SELECT * FROM tblAuditTrail", cnn, adOpenDynamic, adLockOptimistic
datTimeCheck = Now()
strUserID = Environ("USERNAME")
Select Case UserAction

Case "EDIT"
    For Each ctl In Screen.ActiveForm.Controls
   
        If ctl.Tag = "Audit" Then
        If Nz(ctl.Value) <> Nz(ctl.OldValue) Then
        
        With rst
        
        .AddNew
        ![FormName] = Screen.ActiveForm.Name
        ![RecordID] = Screen.ActiveForm.Controls(IDField).Value
        ![FieldName] = ctl.ControlSource
        ![OldValue] = ctl.OldValue
        ![NewValue] = ctl.Value
        ![UserID] = strUserID
        ![DateTime] = datTimeCheck
        ![Action] = UserAction
        ![FormRecordID] = Screen.ActiveForm.CurrentRecord
    
    .Update
    End With
    End If
    End If
    Next ctl
    Case Else
    
    With rst
    .AddNew
        ![DateTime] = datTimeCheck
        ![UserID] = strUserID
        ![FormName] = Screen.ActiveForm.Name
        ![Action] = UserAction
        ![RecordID] = Screen.ActiveForm.Controls(IDField).Value
    .Update
    End With
    End Select
    
AuditChanges_Exit:
    On Error Resume Next
    rst.Close
    cnn.Close
    Set rst = Nothing
    Set cnn = Nothing
    Exit Sub
    
AuditChanges_Err:
    MsgBox Err.Description, vbCritical, "ERROR!"
    Resume AuditChanges_Exit
        
End Sub

请提供正确的更新代码以获取 MV 组合框的审计跟踪。

我尝试了不同的代码，但无济于事。

问候，尼莱。