1. Konstantin Goldobin
  2. PowerBuilder
  3. Friday, 29 December 2023 15:19 PM UTC

Hello,

I don't think I've ever tried this, so I'm not sure if I'm doing something wrong or this is a known issue. I'm trying to modify a list of values of a datawindow column that has the DropDownListBox edit style but does not have an initial list of values. I'm using a string with a proper format, just like it says in Help, but the Modify() call returns "Line 1  Column 18: incorrect syntax." Column 18 contains a slash that separates the first and second pairs. I'd appreciate any advice!

PB 2019 R3 b 2728

Best regards,
Konstantin

Accepted Answer
Konstantin Goldobin Accepted Answer Pending Moderation
  1. Monday, 1 January 2024 12:32 PM UTC
  2. PowerBuilder
  3. # Permalink

Thanks everyone! It's turned out to be a typo in the column name. Sorry for the confusion and happy new year!

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John Fauss Accepted Answer Pending Moderation
  1. Friday, 29 December 2023 15:42 PM UTC
  2. PowerBuilder
  3. # 1

Hi, Konstantin -

Tip: You make it difficult for anyone to offer suggestions/corrections when you neglect to include your code.

Best regards, John

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  1. Konstantin Goldobin
  2. Monday, 1 January 2024 12:28 PM UTC
Thanks for your reply! I thought everyone knows what a Modify() call looks like, so it didn't seem necessary.
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Chris Pollach @Appeon Accepted Answer Pending Moderation
  1. Friday, 29 December 2023 15:28 PM UTC
  2. PowerBuilder
  3. # 2

Hi Konstantin;

  Did you use the DW Syntax Utility to build the Modify() command syntax?

Regards ... Chris 

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  1. Konstantin Goldobin
  2. Monday, 1 January 2024 12:19 PM UTC
Of course! But it shows the same as the online Help.
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Miguel Leeuwe Accepted Answer Pending Moderation
  1. Friday, 29 December 2023 15:58 PM UTC
  2. PowerBuilder
  3. # 3

So what do you have at column 18?

Put a debug stop at you modify command and do a quick watch of you Modify() statement with parts of the string, until you figure out which is the part causing the problem.

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  1. Miguel Leeuwe
  2. Saturday, 30 December 2023 07:07 AM UTC
To clarify: when you edit the source code of your dw, "column" 18 is somewhere at xpos 18 of the edited code. The use of the name "column" is a bit confusing.
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John Fauss Accepted Answer Pending Moderation
  1. Saturday, 30 December 2023 17:10 PM UTC
  2. PowerBuilder
  3. # 4

When faced with a similar situation, here's how I typically address the issue:

1. I create an external-source DataWindow with only the example column(s) I need, and set the column properties in the Edit tab. In your case, I'd define a single column and I would set the Edit Style for that column to Drop-down List Box and define the same set of display and data values that I'm wanting to set dynamically via code. Save the DataWindow.

2. I Edit Source for the newly-created DataWindow and locate the syntax that I'm interested in. In this particular instance, the code table that contains the display & data values used in the DDLB edit style is included in the description of the column definition (not the column DWObject) near the top of the source syntax. Look for: values=".....".

3. In the Values property string, make special note of the use of a tab character between each display and data value, and the forward slash (/) that delimits each display/data value pair - including the end of the last pair. Of course, in a Modify string, you would use ~t instead of a 0x09 character. Syntactically, everything has to be just right for the Modify to work.

Best regards, John

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  1. Konstantin Goldobin
  2. Monday, 1 January 2024 12:30 PM UTC
Thanks for the exhaustive reply! I often do the same!
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