Dabas,
Is there other ways to improve it? Sometimes it takes about 10 minutes for the first time connection....
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Question
Take time for preview/print
vb6, M.Access, Data Report Designer
Why its always take lot of times when i want to preview/print out the report? This situation only occurs when it is the FIRST time i preview/print the report, it will works well on the following preview/printing . Is it somewhere wrong with my connection?
Public Sub DBConnect()
Set db = New ADODB.Connection
db.ConnectionString = "Provider=Microsoft.Jet.ol
"Persist Security Info=False; Data Source=" & App.Path & "\SO.mdb; Mode=ReadWrite"
db.Open
End Sub
Private Sub cmdPreviewPrint_Click()
Dim sqltext As String
With rptSalesOrder
.LeftMargin = 0
.RightMargin = 0
.TopMargin = 0
.BottomMargin = 0
.Orientation = rptOrientLandscape
.ReportWidth = 15550
End With
rptSalesOrder.Show
If rs.rsCommand3_Grouping.Sta
rs.rsCommand3_Grouping.Clo
End If
rptSalesOrder.Sections.Ite
sqltext = "SHAPE { SELECT *"
sqltext = sqltext + " FROM Customer,Transaction, tlbItem "
sqltext = sqltext + " Where Transaction.Mno = tlbItem.Mno"
sqltext = sqltext + " and Transaction.CustName = Customer.CustName"
sqltext = sqltext + " and SONumber = " & cboSONO.text & " } AS COMMAND3 COMPUTE COMMAND3 BY 'Transaction.CustName','Sh
rs.rsCommand3_Grouping.Ope
rptSalesOrder.Refresh
rs.rsCommand3_Grouping.Clo
End Sub
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Answers
slBoon,
10 minutes!!!!
That is not admissable.
If I had this problem, I would try to establish WHERE in the code the slowness is happen.
The three candidate culprits are:
db.Open
rs.rsCommand3_Grouping.Ope
rptSalesOrder.Refresh
I suggest you set a breakpoint (highlight line and press F9) on each one of the lines in the IDE. Run the program. When it stops at the breakpoint, press F8 to continue and see which one is causing the delay.
Depending on the culprit line, we will together find out how to continue
Dabas
slBoon,
I do not use the report designer that often, preferring Crystal reports.
Still, everything seems to indicate that the moment you go get to that With rptSalesOrder instructions, the reports tries to access all the relevant data.
Can you remove the datasource from the design of the report, and hand it over at runtime after you have already called the query from code?
Dabas
No comment has been added lately, so it's time to clean up this TA.
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- Accept Dabas comment as answer
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by: DabasPosted on 2003-09-16 at 14:39:04ID: 9373802
Hi slBoon:
The way ADODB works is that it takes its time establishing a connection to your data source.
Once it has done so, it "remembers" it for the future. (Even if you close the connection)
For that reason you will have a longer wait the first time you connect to your source
Dabas