PRB This Action was Cancelled by an Associated Object.(3426)"
ID: Q189851
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The information in this article applies to:
-
Microsoft Visual Basic Learning, Professional, and Enterprise Editions for Windows, versions 5.0, 6.0
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Microsoft Visual Basic Standard, Professional, and Enterprise Editions, 16-bit and 32-bit, for Windows, version 4.0
SYMPTOMS
This article discusses the error message "This action was cancelled by an
associated object." that Visual Basic generates when working with Access
databases and the Data control. This article does not apply to the ADO data
control.
CAUSE
This error is being generated because the AddNew command of a bound
recordset causes Visual Basic to try to save the current record if the data
has changed. Because the data control is currently pointing to a NULL
record and not an empty record, the data cannot be saved so the "action was
cancelled by an associated object" error is reported. This is commonly seen
when using the data form wizard in Visual Basic versions 4.0 and 5.0. The
data form wizard in Visual Basic 6.0 generates code for the ADO data
control so this error is less likely to occur.
RESOLUTION
Check the underlying recordset to see if either the BOF or EOF properties
are True before allowing an implicit save to occur. An implicit save occurs
either when using the data control to navigate off of a record where the
information has changed or adding a record to a bound recordset.
STATUS
This behavior is by design.
MORE INFORMATION
Steps to Reproduce Behavior
- Create a new Visual Basic Standard EXE project. Form1 is created by
default.
- Add the following controls to Form1:
Control Type Control Name Caption
------------ ------------ -------
Data datDataCtl
Text Box txtCategory
Command Button cmdAddNew Add
Command Button cmdMoveVeryLast Move Very Last
- Cut and paste the following code into the code window of the form:
Option Explicit
Private Sub cmdAddNew_Click()
'Uncomment this block to avoid 3426 error message
' Check to see you are on NULL Pointer
'If datDataCtl.Recordset.EOF Or datDataCtl.Recordset.BOF Then
'Dim strBuffer As String
' Save what was typed into the text box into memory
'strBuffer = txtCategory.Text
' Restore text box value to the original record contents
' in this case, that is NULL
'datDataCtl.UpdateControls
' Add a new blank record
'datDataCtl.Recordset.AddNew
' Restore what has been typed from memory to text box
'txtCategory.Text = strBuffer
' Save the current record we are on and Add a new blank
' record
'datDataCtl.Recordset.AddNew
'End If
' be sure to comment below line when uncommenting above block of
' code to avoid an additional record added to the recordset.
datDataCtl.Recordset.AddNew
End Sub
Private Sub cmdMoveVeryLast_Click()
If Not (datDataCtl.Recordset.BOF Or datDataCtl.Recordset.EOF) Then
datDataCtl.Recordset.MoveLast
datDataCtl.Recordset.MoveNext
End If
End Sub
Private Sub Form_Load()
With datDataCtl
.DatabaseName = App.Path & "\NWIND.MDB"
.RecordSource = "Categories"
End With
txtCategory.DataField = "CategoryName"
End Sub
- While in the form's design view, set txtCategory's DataSource
property equal to datDataCtl.
- Run the form. To reproduce the data, click on the Move Very Last
CommanButton, type any data into the text box, and then click on the Add
CommandButton.
- Note error: uncomment the above code sample to avoid the error.
Additional query words:
kbVBp kbVBp500 kbVBp600 kbdss kbDSupport kbVBp400 kbDatabase kbDAO
Keywords : kbGrpVB kbGrpVBDB
Version :
Platform : WINDOWS
Issue type : kbprb