Q192646: PRB: Move 0 Does Not Refresh TimeStamp and Identity Fields

Article: Q192646
Product(s): Microsoft Visual Basic for Windows
Version(s): WINDOWS:5.0,6.0
Operating System(s): 
Keyword(s): kbGrpDSVBDB
Last Modified: 09-JAN-2000

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The information in this article applies to:

- Microsoft Visual Basic Enterprise Edition for Windows, versions 5.0, 6.0 
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SYMPTOMS
========

With Visual Basic and SQL Server 6.5, Move 0 does not refresh the Timestamp and
Identity fields after Update/Addnew, when using the ClientBatch cursor driver.

CAUSE
=====

A client-side cursor is being used.

RESOLUTION
==========

Set cursordriver property to rdUseServer.

STATUS
======

This behavior is by design.

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

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

1. Create a test table with Timestamp field in SQL Server Pubs database. Run the
  following code in ISQL/W:

        CREATE TABLE BankTbl
               (Account int identity, Balance money, Stamp TimeStamp)
        INSERT INTO BankTbl (Balance) Values(1000)
        INSERT INTO BankTbl (Balance) Values(400)
        INSERT INTO BankTbl (Balance) Values(250)
        CREATE UNIQUE INDEX AcctIndex ON BankTbl(Account)

2. Create a Standard EXE project in Visual Basic. Form1 is created by default.

3. Add a Reference to Microsoft Remote Data Object 2.0.

4. Place a CommandButton on the form.

5. Add the following code to the General Declarations of the form:

        Function TSToHex(sBinRep As rdoColumn) As String
           Dim sBuffer As String
           Dim b As Integer

           sBuffer = "0x"
           For b = 1 To 8        'Break up the binary
           sBuffer = sBuffer + Right$("00" & _
                     Hex(AscB(MidB(sBinRep, b, 1))), 2)
           Next b
           TSToHex = sBuffer     'Return the string
        End Function

        Private Sub Command1_Click()
           Dim cn As New rdoConnection
           Dim rs As rdoResultset
           Dim Timestamp As Variant
           Dim strConnect As String
           Dim strSQL As String
           strConnect = "Driver={SQL Server};Server=servername;Database= _
           pubs;Uid=sa;Pwd="

           With cn
              .CursorDriver = rdUseClientBatch
              .Connect = strConnect
              .EstablishConnection
           End With

           strSQL = "Select Account, Balance, Stamp from BankTbl"
           Set rs = cn.OpenResultset(strSQL, rdOpenstatic, rdConcurBatch)

           Debug.Print TSToHex(rs("Stamp"))
           rs.Edit
           rs!Balance = 99
           rs.BatchUpdate
           rs.Move 0
           Debug.Print TSToHex(rs("Stamp"))
        End Sub

6. Press the F5 key to execute code and note the same value appears twice in the
  Immediate Window.

Additional query words: zero kbDSupport kbVBp500 kbVBp600 kbRDO200 kbdse

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Keywords          : kbGrpDSVBDB 
Technology        : kbVBSearch kbAudDeveloper kbZNotKeyword6 kbZNotKeyword2 kbVB500Search kbVB600Search kbVB500 kbVB600
Version           : WINDOWS:5.0,6.0
Issue type        : kbprb

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