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Q142927: BUG: First of Two Bound Masked Edit Controls Clears on AddNew

Article: Q142927
Product(s): Microsoft Visual Basic for Windows
Version(s): 4.00 | 4.00
Operating System(s): 
Keyword(s): 
Last Modified: 11-JAN-2001

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The information in this article applies to:

- Microsoft Visual Basic Standard Edition for Windows, version 4.0 
- Microsoft Visual Basic Professional Edition for Windows, version 4.0 
- Microsoft Visual Basic Enterprise Edition for Windows, version 4.0 
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SYMPTOMS
========

Only the first of two bound Masked Edit Controls clears when clicking on the
move next button off the last record of the recordset when the EOFAction
property of the data control is set to 2-Add New.

CAUSE
=====

When you click on the move next button to add a new record, both Masked Edit
Controls should clear. This is a bug between the interaction of the data control
and the Masked Edit Box control.

WORKAROUND
==========

Place the following code in the Validate event of the data control:

  Private Sub Data1_Validate(Action As Integer, Save As Integer)
    If Action = vbDataActionAddNew Then
      MaskEdBox1.SelText = ""
      MaskEdBox2.SelText = ""
    End If
  End Sub

STATUS
======

Microsoft has confirmed this to be a issue in the Microsoft products listed at
the beginning of the article. We are researching this problem and will post new
information here in the Microsoft Knowledge Base as it becomes available.

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

Steps to Reproduce Problem in Visual Basic Version 4.0
------------------------------------------------------

1. Start a new project in Visual Basic. Form1 is created by default.

2. Add a Standard Data Control to Form1.

3. Connect Data1 on Form1 to a table in a database as follows: Select the Data
  Control and press the F4 key to display the Properties window. Set the
  DatabaseName property to BIBLIO.MDB, the RecordSource property to the source
  table name Authors, and set the EOFAction property to 2- AddNew.

4. Add two Masked Edit controls to Form1. If this control is not visible in your
  toolbar, select Custom Controls from the Tools menu and select the Microsoft
  Masked Edit Control from the list of controls. Set the DataSource property of
  each to Data1, and the DataField property of one to Author, and the other to
  Year Born.

5. Start the program, or press the F5 key. Move last, then move next to go to an
  empty record. Add data to both fields, then move next again. Only one of the
  Masked Edit Boxes will clear the displayed value. If you use Textboxes or
  SSPanels they will both correctly clear. From now on, each move next after an
  AddNew will clear only one of the masked edit boxes.

Additional query words: 4.00 vb4win

======================================================================
Keywords          :  
Technology        : kbVBSearch kbAudDeveloper kbZNotKeyword6 kbZNotKeyword2 kbVB400Search kbVB400
Version           : 4.00 | 4.00
Issue type        : kbbug

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

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