BUG: UserControl Containing ADO Data Control Fails to Unload (248985)

MORE INFORMATION

Steps to Reproduce Behavior

1. Create a Standard EXE project (Project1.) Form1 is created by default.
2. From the Project menu, add another form named Form2, and a UserControl named UserControl1.
3. From the Project menu, choose Components, and select Microsoft ADO Data Control 6.0 (OLEDB). Click OK.
4. From the Project menu, choose References, and then select Microsoft ActiveX Data Objects Recordset 1.5 Library. Click OK.
5. Add a text box named Text1, a command button named Command1, an ADO Data Control (Adodc1), and the following code to UserControl1:

   Private Sub Command1_Click()
      Set Text1.DataSource = Adodc1
      ' do something
      Set Text1.DataSource = Nothing
   End Sub
   
   Private Sub UserControl_Terminate()
      MsgBox "UserControl_Terminate"
   End Sub
   					

6. Add an instance of the UserControl, a command button named Command1, and the following code to Form2:

   Private Sub Command1_Click()
      Unload Me
   End Sub
   
   Private Sub Form_Terminate()
      MsgBox "Form2 Terminate"
   End Sub
   					

7. Add a command button named Command1 and the following code to Form1:

   Private Sub Command1_Click()
      Form2.Show vbModal
   End Sub
   					

8. Press F5 to run the project and then click Command1 on Form1. You will then see Form2 display.
9. Press Command1 on the UserControl that is hosted in Form2, and then close Form2. You will see the Terminate event for Form2 fire, but the UserControl1's Terminate event does not fire (it will fire when you close the application).
10. To work around the problem, replace the code of Command1_Click() in the UserControl with this code:

    Private Sub Command1_Click()
       Dim rs As RecordSet
       Set rs = Adodc1.RecordSet
       Set Text1.DataSource = rs
    
       ' do something
       Set Text1.DataSource = Nothing
       Set rs = Nothing
    End Sub
    						

    Repeat the previous test and note that the UserControl terminates normally.