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Q269037: BUG: DataCombo Loses BoundText When Recordset Re-Queried

Article: Q269037
Product(s): Microsoft Visual Basic for Windows
Version(s): WINDOWS:2.5,2.6,6.0
Operating System(s): 
Keyword(s): kbDatabase kbDataBinding kbVBp600bug kbGrpDSVBDB kbDSupport kbATM kbmdac270 kbado270
Last Modified: 23-AUG-2001

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The information in this article applies to:

- Microsoft Visual Basic Professional Edition for Windows, version 6.0 
- Microsoft Visual Basic Enterprise Edition for Windows, version 6.0 
- ActiveX Data Objects (ADO), versions 2.5, 2.6, 2.7 
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SYMPTOMS
========

When you re-query a recordset, then binding a new recordset or otherwise
resetting the RowSource property on a DataCombo control causes the BoundText
property of a DataCombo to return the Text property.

RESOLUTION
==========

To work around the problem, set the DataCombo.Text property to itself as
follows:

DataCombo1.Text = DataCombo1.Text

STATUS
======

Microsoft has confirmed this to be a bug in the Microsoft products listed at the
beginning of this article.

MORE INFORMATION
================

Steps to Reproduce Behavior
---------------------------

1. Create a form in the Visual Basic form editor with three command buttons, a
  DataCombo control, the ADO data control, and a ListBox control.

2. Add the following code to the form:

  Private Sub Command1_Click()
    ' First show that the BoundText displays a number
    List1.AddItem DataCombo1.BoundText
  End Sub
  Private Sub Command2_Click()
    ' Now it displays a name!
    ' This is where we break the bindings and display the results
    ' When command1 executes DataCombo1 will show datacombo1.text 
    ' instead of datacombo1.boundtext.
    Adodc1.Refresh
    Command1_Click
  End Sub
  Private Sub Command3_Click()
    ' Here we implement the fix.
    DataCombo1.Text = DataCombo1.Text
    Command1_Click
  End Sub
  Private Sub Form_Load()
    ' You may need to change the path in the following
    ' line to point to NWIND.MDB
    Adodc1.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;" & _
      "Data Source=E:\Program Files\Microsoft Visual Studio\VB98\NWIND.MDB"
    Adodc1.RecordSource = "Employees"
    DataCombo1.BoundColumn = "EmployeeID"
    DataCombo1.ListField = "LastName"
    Set DataCombo1.RowSource = Adodc1
    Set DataCombo1.DataSource = Adodc1
    DataCombo1.Text = "1. Select a name"
    Command1.Caption = "2. List BoundText"
    Command2.Caption = "3. Requery Recordset"
    Command3.Caption = "4. Reset BoundText"
  End Sub

3. Run the program, and follow the numbered captions.

Additional query words:

======================================================================
Keywords          : kbDatabase kbDataBinding kbVBp600bug kbGrpDSVBDB kbDSupport kbATM kbmdac270 kbado270 
Technology        : kbVBSearch kbAudDeveloper kbADOsearch kbADO250 kbADO260 kbZNotKeyword6 kbZNotKeyword2 kbVB600Search kbVB600 kbADO270
Version           : WINDOWS:2.5,2.6,6.0
Issue type        : kbbug
Solution Type     : kbpending

=============================================================================

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