Label project export fails in Web Report Designer (Angular sample, LL31)

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1

Hi,

Exporting a label project from the Web Report Designer fails with error -18 LL_ERR_PARAMETER) in List & Label 31. This is reproducible using the unmodified Angular Web Reporting Sample.

Steps to reproduce:

  1. Open the sample solution: C:\Program Files (x86)\combit\LL31\Samples\Microsoft .NET.NET 8\ASP.NET\Angular Web Reporting Sample
  2. Build and run (dotnet run)
  3. Open the Web Report Designer in the browser
  4. Create a new Label project
  5. Add any content (even just static text — no data binding needed)
  6. Click Export, choose any format (PDF, PNG, etc.)
  7. Export fails: “Execution failed”

Note: Exporting list/report projects from the same sample works fine. The issue is specific to label projects.

Debug log excerpt:

LlPrintSetOption(1, 26==LL_PRNOPT_COUNT_OF_ITEMS, 0) → -18 (Parameter error)

Stack trace from the debug log:

combit.Reporting.LlCore.LlPrintSetOption(Int32 option, Int32 value)
combit.Reporting.ListLabel.PrintLabelFromRelationalDataSourceNewMode(…)
combit.Reporting.ListLabel.AutoPrint(…)

It appears that PrintLabelFromRelationalDataSourceNewMode passes 0 to LL_PRNOPT_COUNT_OF_ITEMS for label projects, which is rejected as an
invalid parameter.

Environment:

  • List & Label 31 (v31.1.313)
  • .NET 8.0 / Windows 11
  • Angular Web Reporting Sample (unmodified)

Is this a known issue? Is there a service pack or workaround available?

Thanks

2

Hey Simon,

Great to see you here in the community - welcome.

Can you please check what is stored in your new label for the property Layout regions > Number of copies?

image
image2499×730 75.4 KB

I’m afraid it should be at least “1” - otherwise, no meaningful output can be produced for labels. Perhaps the default for the default printer set on your system - for me it’s “Microsoft XPS Document Writer” - is unsuitable?

3

Hi Oliver,
Thanks for this quick response! Number of Copies was set to “1”. I’ve tried a few different default printers e.g., OneNote for Windows 10, Microsoft XPS Document Writer, Microsoft Print to PDF ect but I get the same result. I don’t have a real printer connected to this machine currently so I can’t try that.

Also, I just noticed that is an existing label in the sample application, and the same error happens for it too.

image
image1360×130 4.67 KB

Are you able to reproduce the issue?

4

Interesting… the default label works perfectly for me as well. It also works in another MVC ASP.NET example on my end. However, I already have the latest prerelease Service Pack (version 31.2) installed because of something else - perhaps it already includes an adjustment. You might want to try that too, just to be safe. Otherwise, support will probably need to take a closer look.

5

Hi Oliver,

Thanks for confirming it works for you on SP 31.2. I’ll try upgrading but the latest version on NuGet for combit.ListLabel31 and combit.ListLabel31.Web is 31.1.0. Where can I download the 31.2 prerelease?

Thanks,
Simon

6

P.S. It seems there is a 31.2 version on your feed at nuget.combit.net but it is only the CrossPlatform packages. Is their a Windows SP 31.2 available as a NuGet package, or a support portal?

7

You will find the lastest prerelease service pack in general within your combit account for download.

The sample works with the classic List & Label version for Windows. You are mentioning the new cross platform version. I think the packages are updated in another way there - found that:
New NuGet server for LLCP packages

As I remember the installed samples are working with hard references - the assemblies directly from installation directory are used - not the NuGet packages.