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Dynamics 365 Community / Forums / Finance | Project Operations, Human Resources, ... / Calling a c# library f...
Finance | Project Operations, Human Resources, ...
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Calling a c# library from d365fo finance & get a reference error during build

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Posted on by ZH-29041953-0 14
https://learn.microsoft.com/en-us/dynamics365/fin-ops-core/dev-itpro/dev-tools/write-business-logic
I'm following this post step-by-step to call a c# library from my d365fo finance code.
I'm getting this reference error:
I checked 'add reference' in my x++ project, there's no matching .net reference of this one.
Has anyone seen an error like this before?
  • Suggested answer
    Waed Ayyad Profile Picture
    Waed Ayyad 9,218 Super User 2026 Season 2 on at
    Hi @Zeyu Hu,
     
    Did you add using Your reference library in your D365 FO code?
     
    Regards,
    Waed Ayyad.
     
    Please mark this answer as "Verified" if it solved your issue. In order to help others who will face a similar issue in the future
     
  • Verified answer
    ZH-29041953-0 Profile Picture
    ZH-29041953-0 14 on at
    It turns out I was using WPF platform c# library, hence the error. Using .Net platform should solve the issue

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