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Dynamics 365 Community / Forums / Small and medium business | Business Central, N... / .net dll is not workin...
Small and medium business | Business Central, N...
Suggested Answer

.net dll is not working in business central v19

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Posted on by M Hussnain Javed 245

I developed two dlls. One calculates the formula expression given in the text format and other convert the input into TLV Algorithm. When I used these two dlls in the AL Business Central v19, one of them worked fine. But other dll that converts the input into TLV Algorithm is not working. I used same piece of AL code

pastedimage1667319988375v1.png

but I'm getting this Error:

pastedimage1667320040769v2.png

I nplaced both dlls on this path C:\Program Files\Microsoft Dynamics 365 Business Central\190\Service\Add-ins

Can anyone please tell me what's this error. Answers will be highly appreciated.

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  • Suggested answer
    DAnny3211 Profile Picture
    DAnny3211 11,423 Super User 2026 Season 1 on at

    hi

    look documentation

    i hope help you

    learn.microsoft.com/.../devenv-get-started-call-dotnet-from-al

    DAniele

  • Suggested answer
    YUN ZHU Profile Picture
    YUN ZHU 101,846 Super User 2026 Season 1 on at

    Hi, The followings are some related questions that I hope will give you some hints.

    Cannot create an instance of the following .NET Framework object

    https://www.fornav.com/knowledge-base/cannot-create-an-instance-of-the-following-net-framework-object/

       

    https://forum.mibuso.com/discussion/70291/cannot-create-an-instance-of-the-net-framework-object

    Thanks.
    ZHU

  • M Hussnain Javed Profile Picture
    M Hussnain Javed 245 on at

    Hi,

    Thanks for replying.

    I'm still getting the same issue. One dll is working fine that is calulating the expression but other one is not working fine that converts the input into tlv format. I followed the same method to use this dll and also followed the links provided by yzhums  but all all in vain.

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