A DotNet variable has not been instantiated.

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Posted on by Sleina

Hi couldl someone tell me how I'm able to instantiated a DotNet Variable of a control add-in?

codeunit 50545 MergeDocs

{

Access = Public;

[EventSubscriber(ObjectType::Codeunit, Codeunit::"Sales-Post", 'OnAfterFinalizePostingOnBeforeCommit', '', false, false)]

local procedure MyProcedure(var SalesInvoiceHeader: Record "Sales Invoice Header")

var

Recref2: RecordRef;

TestText: Text[2500];

MergePDF: Codeunit MergePDF1;

begin

SalesInvoiceHeader.FindFirst();

SalesInvoiceHeader.SetRange("No.", SalesInvoiceHeader."No.");

Recref2.GetTable(SalesInvoiceHeader);

MergePDF.AddReportToMerge(50500, Recref2); //Ximiq Invoice

MergePDF.AddReportToMerge(11510, Recref2); //QR-Invoice

Base64string := MergePDF.GetJArray();

Message(DocumentAdded, SalesInvoiceHeader."No.");

Control.MergePDF(Format(Base64string));

end;

var

DocumentAdded: Label 'Document %1 added';

Control: ControlAddIn PDF;

Base64string: JsonArray;

thank you so much

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Answers (2)

Sleina on at

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RE: A DotNet variable has not been instantiated.

Thank you so much this helps a lot! :)
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YUN ZHU 74,036 Super User 2024 Season 2 on at

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RE: A DotNet variable has not been instantiated.

Hi, yes, as I understand, this usercontrol cannot be executed without being added to the page.

So, unfortunately, you need to change the solution.

I'm sorry I haven't tried the below solution, but I think you can give it a try.

Using Azure Function to combine PDF.

https://powergi.net/2021/04/12/505-2/

https://www.sharepointeurope.com/merge-pdf-files-in-sharepoint-using-an-azure-function/

Using Azure Functions with Dynamics 365 Business Central

https://docs.microsoft.com/en-us/learn/modules/use-azure-functions/

https://ksdconsultancy.blog/2021/11/28/integrating-azure-function-with-business-central/

A ftp sample: https://demiliani.com/2021/12/07/dynamics-365-business-central-handling-files-via-ftp-on-saas/

Hope this also helps.

Thanks.

ZHU
Sleina on at

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RE: A DotNet variable has not been instantiated.

yzhums is it possible to call the scripts/controlAddin from an eventsubscription?

I would need to merge documents right after the following event: OnAfterFinalizePostingOnBeforeCommit

I can't seem to make it work

Thank you so much in advance for your help!
Sleina on at

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RE: A DotNet variable has not been instantiated.

Thank you very much!
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YUN ZHU 74,036 Super User 2024 Season 2 on at

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RE: A DotNet variable has not been instantiated.

Hi, .NET Interoperability is only available on-premise. If you want to use this functionality, you must set the "target": "OnPrem" in the app.json file.

More detials: https://docs.microsoft.com/en-us/dynamics365/business-central/dev-itpro/developer/devenv-get-started-call-dotnet-from-al

And if you want to merge PDF, here is an awesome Javascript solution. This can be used in SaaS.

Merge PDF in Business Central (linkedin.com)

GitHub - gonzaloriosley/Merge-PDF-Business-Central

Hope this will help.

Thanks

ZHU