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Resolved Datawindow expression does not re-evaluate when referenced column changes

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  1. Larry Pettit
    Larry Pettit
  2. PowerBuilder
  3. Wednesday, 26 June 2024 16:52 PM UTC

if(approved_day_13='N' ,255,16777215)

 

I have the above expression in a column of a datawindow that looks at the value in the approved_day_13 column and then sets the background color to red or white.  It works fine when i retrieve the datawindow.

However, if I programmatically in PowerScript change the value in the approved_day_13 column using SetItem(), the background color doesn't change until I save and re-retrieve the datawindow.  Shouldn't the expression re-evaluate when a referenced column changes?

Assuming this isn't going to get "fixed" anytime soon, is there a workaround?

Somebody else apparently had a similar problem about 6 years ago.

https://stackoverflow.com/questions/50498808/powerbuilder-datawindow-expression-changes-not-reflected-until-reopen-of-object

 

 

 

Remote machine name in a TSE session
PB2022R2 deployment failed with "Error calling met...
Accepted Answer
Larry Pettit
Larry Pettit Accepted Answer Pending Moderation
  1. Friday, 28 June 2024 21:17 PM UTC
  2. PowerBuilder
  3. # Permalink

I wasn't able to create a simple reproducible scenario.  Every time I tried, it worked (couldn't reproduce issue in simple example).

However I was able to find a workaround.  After doing the Setitem(), I use Modify to reset the expression:

ls_return = this.Modify(ls_columnname + ".background.color=~"16777215~tif(approved_day_13=~~'N~~' ,255,16777215)~"")

It doesn't seem like I should have to do this but it seems to work.

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John Fauss
  1. John Fauss
  2. Friday, 28 June 2024 21:25 PM UTC
Glad to hear you were able to find a solution, Larry. Thanks for letting us know the details!
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Responses (6)
Kai Zhao @Appeon
Kai Zhao @Appeon Accepted Answer Pending Moderation
  1. Thursday, 27 June 2024 02:36 AM UTC
  2. PowerBuilder
  3. # 1

Hi Larry,

Please open a support ticket in the support portal and please provide a simple PB case to reproduce the issue to us for more study, Many thanks in advance.

https://www.appeon.com/standardsupport/

Regards，
Kai

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John Fauss
John Fauss Accepted Answer Pending Moderation
  1. Wednesday, 26 June 2024 20:20 PM UTC
  2. PowerBuilder
  3. # 2

Hi, Larry - 

Does the approved_day_13 column have input focus when the other column's value is programmatically changed? If so, you are not seeing the approved_day_13 column DWObject, but instead are looking at the DW's dynamic edit control that gets superimposed over the column.

Best regards, John

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Larry Pettit
Larry Pettit Accepted Answer Pending Moderation
  1. Wednesday, 26 June 2024 20:08 PM UTC
  2. PowerBuilder
  3. # 3

PB 2022 R3

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Chris Pollach @Appeon
  1. Chris Pollach @Appeon
  2. Wednesday, 26 June 2024 20:31 PM UTC
Hi Larry;

If you have a simple PB App test case that uses that same DWO and can replicate your issue, please open a support ticket.

Then attach your test case to the ticket for Appeon to evaluate.

Regards .. Chris
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Larry Pettit
Larry Pettit Accepted Answer Pending Moderation
  1. Wednesday, 26 June 2024 19:34 PM UTC
  2. PowerBuilder
  3. # 4

Since the datawindow has no groups, I had not tried calling GroupCalc().  I tried it just now, as you suggested, and it made no difference.

Comment
Chris Pollach @Appeon
  1. Chris Pollach @Appeon
  2. Wednesday, 26 June 2024 20:00 PM UTC
Thanks for trying that command. It's basically like a "refresh" request in MS-Windows File Explorer.

What version & build of PB are you using?
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Miguel Leeuwe
  1. Miguel Leeuwe
  2. Thursday, 27 June 2024 06:07 AM UTC
In addition, you can also do a Setredraw(true) or a sort() command.
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Larry Pettit
  1. Larry Pettit
  2. Thursday, 27 June 2024 12:35 PM UTC
I have also tried Setredraw(false) prior to the setitem and Setredraw(true) after the setitem. Still not working.
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Chris Pollach @Appeon
Chris Pollach @Appeon Accepted Answer Pending Moderation
  1. Wednesday, 26 June 2024 19:14 PM UTC
  2. PowerBuilder
  3. # 5

Hi Larry;

  Have you tried calling the GroupCalc method right after the SetItem() update?

Regards .. Chris

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