Report Control - Problem using Report Control 9.80 in VB6 +20K rows

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Problem using Report Control 9.80 in VB6 +20K rows

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Category: Codejock Products
Forum Name: Report Control
Forum Description: Topics Related to Codejock Report Control
URL: http://forum.codejock.com/forum_posts.asp?TID=11800
Printed Date: 20 July 2025 at 8:17am
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Topic: Problem using Report Control 9.80 in VB6 +20K rows

Posted By: pcmaker
Subject: Problem using Report Control 9.80 in VB6 +20K rows
Date Posted: 12 August 2008 at 6:40pm

Hello People.

I have a big problem using Report Control 9.80 in VB6.

I�m trying to load more than 20.000 rows, with 40 columns aprox, and the first time of loading, the response is quick and acceptable, but in the same instance of the form, in others words, without closing the form, when I get unloaded the 20.000 rows, loading, for example, 100 rows and then trying to load the same 20.000 rows, it spend to much time (second load is aprox. two times more slowly than the first one, and I think it is increasingly this problem, because it gets bigger the time I wait to get a response, every time I repeat this action, to load the 20k I mean) .

The only way make it work normally again, is to close the form and open it again.

Thanks so much for the help.

This is the code to destroy the rows and columns that I use.

wnd.GroupsOrder.DeleteAll

wnd.Columns.DeleteAll

wnd.PaintManager.ShadeGroupHeadings = False

wnd.Records.DeleteAll

wnd.PaintManager.NoItemsText = "No Existen Registros"

wnd.Populate

Replies:

Posted By: Oleg
Date Posted: 13 August 2008 at 1:35am

Hi,

Think you need update. In last versions added Batch methods to add and remove rows.

-------------
Oleg, Support Team
CODEJOCK SOFTWARE SOLUTIONS

Posted By: pcmaker
Date Posted: 22 August 2008 at 4:19pm

Hi oleg.

Thanks, I�m update to V.12 and the problem was solve.

Now, I need help with this "

Batch methods" that you commented.

If you can post any example code, I appreciate.

And Thanks again.

Posted By: AndreiM
Date Posted: 23 August 2008 at 9:06am

Hi,

To enable Batch allocations (and custom heap) you have to add 2 lines in Form_Initialize handler:

    Private Sub Form_Initialize()
        ReportControlGlobalSettings.UseBatchAllocation
        ReportControlGlobalSettings.UseReportCustomHeap
    End Sub

I also create sample (it will be added to our Extended samples):

https://forum.codejock.com/uploads/20080823_085346_ReportBatchAllo.zip - uploads/20080823_085346_ReportBatchAllo.zip

NOTE:

For Windows XP custom heap optimization works in full mode only without debugger. I mean that for tests of memory using better build and run EXE file to get more real results.

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Regards,
Andrei Melnik