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Dynamics 365 Community / Forums / Microsoft Dynamics AX (Archived) / Cast error if code is ...
Microsoft Dynamics AX (Archived)

Cast error if code is running in CIL

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Posted on by Jan M. 3,325

Hi

Got an error if code runs in CIL. Call IL method with Job:

conreq = ['output reverse']
conret = Global::StrReverseIL(conreq);

public static server container StrReverseIL(container _str)
{
    container   conparm = _str,
                conret;

    new XppILExecutePermission().assert();

    conret = Global::runClassMethodIL(classStr(Global), staticMethodStr(Global, strReverse), conparm);

    CodeAccessPermission::revertAssert();

    return conret;
}

System.InvalidCastException: Unable to cast object of type 'System.Object[]' to type 'System.String'.
   at Global::strReverse(Object[] )
   at Microsoft.Dynamics.Ax.Xpp.ReflectionCallHelper.MakeStaticCall(Type type, String MethodName, Object[] parameters)
   at Dynamics.Ax.Application.SysDictClass.invokeStaticMethod(Object[] _params) in SysDictClass.invokeStaticMethod.xpp:line 26
   at SysDictClass::invokeStaticMethod(Object[] )
   at Microsoft.Dynamics.Ax.Xpp.ReflectionCallHelper.MakeStaticCall(Type type, String MethodName, Object[] parameters)
   at Microsoft.Dynamics.Ax.Xpp.PredefinedFunctions.runAsInvoke(String className, String staticMethodName, Object[] parms, Object[]& exportInfolog)

The table SysXppAssembly and XppIL was cleand up bevor running new CIL.

Any idea what have to be changed?

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  • Suggested answer
    Martin Dráb Profile Picture
    Martin Dráb 239,082 Most Valuable Professional on at

    The method executed through runClassMethodIL() must have a single parameter of type container. It's not the case of strReverse(), which expects a string.

  • Jan M. Profile Picture
    Jan M. 3,325 on at

    Of course we changed the strReverse() input/output to container, otherwhise you cannot run the code client- or serverside what works fine. The problem now exist only if running in CIL.

  • Martin Dráb Profile Picture
    Martin Dráb 239,082 Most Valuable Professional on at

    "Of course" isn't appropriate here - I couldn't expect you would introduce such a bug. Now your application won't even compile, because all places using strReverse() are now incompatible with the new method definition. Never ever change the type of parameters or the return value from the definition in system layers.

    Revert strReverse() to the original state, create a new method for calling by runClassMethodIL(), compile the application and generate CIL. Then try it again. If it still doesn't work, show us your code.

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