How to refresh DataGrid Control when updating the Database?

  I use an DataGrid Control and the datasource is set as the name of an ADODC Control.The datas showed at the DataGrid are from several tables. After modifying the datas of one of these tables by SQL through ADODB.Connection.Execute method, I always refresh the ADODC control and the DataGrid control by the "refresh" method of both controls. To my suprised, the datas in the DataGrid are not changed at all. Why? that below are codes:

    lngBookID = adoBooks.Recordset(0) 'adoBooks is ADODC
    strSql = "update books set BookName='" & txt2ShowBookName.Text Where BookID = " & CStr(lngBookID)
   
   gblDBConn.Execute strSql 'gblDBConn is ADODB.Connection

    adoBooks.Refresh
    grd2Books.Refresh 'grd2Books is DataGrid Control

What puzzled me is that if I write the Refresh Codes in the Click Event Sub of ButtonBox like that:

    Private Sub Command1_Click()
     adoBooks.Refresh
     grd2Books.Refresh
    End Sub

and when I click the ButtonBox, the datas in the Grid are refreshed.
   Can Someone tell me what's the matter?
IaskyouAsked:
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SpideyModConnect With a Mentor Commented:
per recommendation

SpideyMod
Community Support Moderator @Experts Exchange
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Guy Hengel [angelIII / a3]Billing EngineerCommented:
Try to use
Doevents
between the .Execute and the .Refresh...
I guess that your Refresh comes toooooo fast :-)

CHeers
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Éric MoreauSenior .Net ConsultantCommented:
Are you using only 1 connection? You won't get problems this way.

Have a look at
http://support.microsoft.com/default.aspx?scid=kb;en-us;Q200300
http://www.experts-exchange.com/questions/Q_20237490.html
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IaskyouAuthor Commented:
I use two Connection. One is ADODB.Connection Object, the other is ADODC. The question is that The first
time I change the data, the grid doesn't refresh at all. But if I change the data again, the grid will
show the data which I changed the first time. and the third time the second-time data is showed. why?
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Éric MoreauSenior .Net ConsultantCommented:
Don't connect through ADODC. Use only one connection. You don't need an ADODC to use a grid. You can simply open a static recordset and bind it to the grid this way:

set datagrid1.datasource = YourRecordset

If you absolutely want to keep your ADODC, your will need to refresh your connections (see the links of my previous post).

>>show the data which I changed the first time. and the third time the second-time data is showed. why?

This is because Access is not a real database engine. It is only a file sharing manager!
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IaskyouAuthor Commented:
I have solved this question. Only add "BeginTrans" and "CommitTrans" can OK. Thanks for all of you.
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Éric MoreauSenior .Net ConsultantCommented:
you can't leave this question opened. please ask CS to refund your points and move this question to PAQ (or delete it)
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AudsimousCommented:
simply add this line after your refreshes...

set grd2Books.datasource = adobooks
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Éric MoreauSenior .Net ConsultantCommented:
Audsimous, haven't you read that Iaskyou solved his problem?
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kodiakbearCommented:
Dear Audsimous
I've rejected your proposed answer as Experts Exchange holds an experiment to work without the answer button.

See: <http://www.experts-exchange.com/jsp/communityNews.jsp>
Paragraph: Site Update for Wednesday, November 06, 2002

By this rejection the Asker will be notified by mail and hopefully he will take his responsibility to finalize the question or post an additional comment.
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Thanks !

kodiakbear
Experts Exchange Moderator
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Éric MoreauSenior .Net ConsultantCommented:
refund and move to PAQ
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DanRollinsCommented:
Hi Iaskyou,
It appears that you have forgotten this question. I will ask Community Support to close it unless you finalize it within 7 days. I will ask a Community Support Moderator to:

    Refund points and save as a 0-pt PAQ.
    *** even though emoreau's suggestion to avoid ADODC is the best solution -- a real winner

Iaskyou, Please DO NOT accept this comment as an answer.
EXPERTS: Post a comment if you are certain that an expert deserves credit.  Explain why.
==========
DanRollins -- EE database cleanup volunteer
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