Question

Section suppression based on unknown record count

Asked by: shovavnik

Hello,

We are creating a number of relatively complex reports using CR 9.1.5000 (bundled with VS.NET 2003). Our project is on a really tight deadline, so we would really appreciate any help.

In most of our reports, we include a subreport or two in the report footer.

The problem is that when the reocrds of the report in the details section end at the end of a page, and the report footer overflows to the next page (because it's an expandable subreport), the page header section as well as the details section also overflow incorrectly over to the next page.

For example, say a customer has 20 orders and these 20 orders fill up a single page in the crystal report. Also assume there are some rows, say 5, of summary data given by a subreport, including complex summary data that can only be calculated in the db (the available CR functions are insufficient). The output will be as follows. Page 1 displays correctly. It shows all 20 orders on the first page. Page2 display incorrectly. It shows the subreport correctly at the top of the page, but it also shows the page header and the column lines of the details section without any data. In other words, the subreport appears ON TOP OF the empty details section on the last page.

We tried to figure out the proper formula to suppress the page header on the last page if there are no records on that page, but are unable to. Keep in mind that the height of a row is unpredictable as the text can word-wrap on the report.

Is there any way to figure out in the page header section how many records are on visible on the "current" page. Ideally, the suppress function should look something like:

PageNumber > 1 AND NumberOfRecordsOnThisPage = 0

Is this possible?

Thanks in advance!

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Asked On
2005-09-14 at 10:29:32ID21561451
Tags

crystal

,

record

,

page

,

count

,

suppress

Topic

Crystal Reports Software

Participating Experts
2
Points
500
Comments
6

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Answers

 

by: frodomanPosted on 2005-09-14 at 10:47:20ID: 14883005

I would take a different approach.  Create a new report footer *above* your subreports.  Now create this formula in your report header:

shared numberVar SuppressHeader := 0;

In the new report footer section create this formula (make sure it's above the subreports!):

shared numberVar SuppressHeader := 1;

Now use this formula to conditionally suppress the page header section:

(shared numberVar SuppressHeader = 1)


This will give the results you want but it relies on setting the variable to a specific value before the subreports are called rather than trying to figure out how many records you have on a page.

frodoman

 

by: shovavnikPosted on 2005-09-14 at 11:29:49ID: 14883467

Thanks for you advice!

Won't this always suppress the page header on the page that shows the subreport in the report footer?

Say there are 30 records and not 20 as I mentioned above, and the second page shows the last ten records. In this case, the subreport could fit on the page and in this case, I wouldn't want to suppress the page header.

I'll try this tomorrow just to make sure. But in any case, the approach seems promising, even if not the details.

I'll keep you posted.

shovavnik

 

by: frodomanPosted on 2005-09-14 at 12:30:52ID: 14884021

>>> Won't this always suppress the page header on the page that shows the subreport in the report footer?

You should be fine with this approach.  In your example with 30 records, the page header for page 2 would be rendered before record #21 and before the shared variable changed.  Crystal wouldn't reevaluate the page header again unless a third page was printed.

frodoman

 

by: mlmccPosted on 2005-09-14 at 13:55:47ID: 14884849

Agree with frodoman.  An excellent solution.

mlmcc

 

by: shovavnikPosted on 2005-09-15 at 09:51:21ID: 14891011

Thanks frodoman, your answer was perfect and it works smoothly.

You saved us a whole lot of time!

shovavnik

 

by: frodomanPosted on 2005-09-15 at 10:30:56ID: 14891362

Glad to help.

20120131-EE-VQP-002

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