Method Not found Autodesk.Gis.Map.Utilities.MapValue

[subash.nalla]

I have built a dll for AutoCAD Map 2D 2015 with out any issue. I tried to execute the same dll in AutoCAD Map 3D 2023 and getting the attached error and require help in that. Please let me know for any other questions.

[fieldguy · Accepted solution]

you will have to show some code.  when i see "Method" errors it's usually caused by misuse of brackets - "()". but, with code errors like that your dll should not "Build" successfully. 

2015 is very old.  It's quite possible the ManagedMapApi has changed. i don't know how to check that.

<edit>

try changing the attached reference in your 2015 dll to the newest ManagedMapApi (2023). this would confirm that the "Build" is successful.

[subash.nalla]

Thanks for your reply.  I have changed all the reference to AutoCAD Map 3D 2023. I am getting  compile errors as in the attached image. I that an issue with .Net Framework, please help me in this.

[fieldguy]

i am not sure i can help at all. your pic indicates that all "Autodesk" Apis are not found. was that the result of changing the path to ManagedMapApi?

i would not attempt to modify a 2015 autocad application. i would start a new .NET Framework project with current autocad Apis and copy / paste old code piece by piece. you don't need any code to see that the Api's are available (blue squiggles under "using Autodesk." means not available). 

i would not support anything for 2015 - it's far too old.

[subash.nalla]

Thanks for the reply. The same solution is giving expected results in AutoCAD Map 3D 2015 and getting the exception only in higher version. I will try to build the solution in AutoCAD Map 3D 2023. 

[norman.yuan · Accepted solution]

Since you are targeting Acad2023, you need to change your DLL project's target .NET framework from older version to Framework 4.8 (I bet this is the problem you have).

[subash.nalla]

Thank you for the reply, will build the solution with proper .Net Framework.

[O_Eckmann · Accepted solution]

Hi @subash.nalla ,

I've detect same problem here : https://forums.autodesk.com/t5/autocad-map-3d-developer/mapvalue-assign-error/m-p/9170669 

DLL compiled for Map 2015 works well until 2018.

But it's necessary to create a new DLL for 2019 (with target Framework 4.7) for version above. This DLL work from 2019 to 2023.

Olivier

[subash.nalla]

Hi Thanks for the reply in my case dll didn't work for Map 3D 2017 also. I have built in Map 3D 2017 and it is working fine.

[subash.nalla]

Hi Thanks for the reply, built in Map 3D 2017 and it is working fine.