Calling X++ code from C# (AX 7)

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Posted on by Community Member Microsoft Employee

I have an X++ method (residing in the Fleet Management module) that I need to call within a C# class library.

I have used the below link as a guide -> https://ax.help.dynamics.com/en/wiki/writing-business-logic-in-c-and-x-source-code/

Basically, I have a c# console application, and I am making a call to this ax method as below

    using Dynamics.AX.Application;
    using Microsoft.Dynamics.Ax.Xpp;
    class Program
    {
        static void Main(string[] args)
        {
            DFM_H5PortalSerializer axClass = new DFM_H5PortalSerializer();
            axClass.processString("test");
        }
    }

The ax Class is shown in intellisense, however, as soon as I run it, i get the following exception:

"An unhandled exception of type 'System.BadImageFormatException' occurred in mscorlib.dll

Additional information: Could not load file or assembly 'Dynamics.AX.FleetManagement, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies. An attempt was made to load a program with an incorrect format."

Any ideas on what is causing the issue and how to solve it?

Thanks

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Martin Dráb 230,445 Most Valuable Professional on at

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RE: Calling X++ code from C# (AX 7)

Yes, if you want a console application talking to Dynamics AX, you need a web service.

Don't forget that production environments of Dynamics AX run in Azure, so how else could your console application talk to them?
Community Member Microsoft Employee on at

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RE: Calling X++ code from C# (AX 7)

Thanks for you reply Martin. So basically, I would need to use a JSON or SOAP service instead to expose functionality to my c# console application..
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Martin Dráb 230,445 Most Valuable Professional on at

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RE: AX7 - Calling X++ code from C#

You can't just call AX code from outside Dynamics AX, such as in your console application.

But you can write C# code (there you can refer to AX types) and execute it from Dynamics AX, which is what the wiki talks about.