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Class extensions in D365

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Posted on by Shahrukh

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Hi all,

I am working with class extensions. I have studies some very helpful articles about class extensions.

We can add new instance and static variables and methods in class extension. But is there any way to modify or override an existing method in the extension class ??
e.g.

There is a class named DmfIntegrationBridge and it has a method named getJobStatus, so i want to override this method in a way that i want to return some extra information from this method. So is there any way to do this?

We are going to restoring below

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André Arnaud de Cal... 300,088 Super User 2025 Season 2 on at

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RE: Class extensions in D365

Hi Shahrukh,

It really depends on the details what you want to achieve. If you can use e.g. a post event handler and want to execute some additional tasks, then it is possible. You have to explain what exactly you mean with "return some extra information". Where and what for will this be used?

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Martin Dráb 236,960 Most Valuable Professional on at

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RE: Class extensions in D365

You asked the same question below my blog post about class extensions, so let me copy my reply here too:

If you want to override a method, create a new class extending the base class and override the method. Inheritance (parent / child relationship and overriding) isn’t related to extensions.

If you want to run some extra code on the beginning or the end of the method, you can also use events. You don’t need class extensions for this either.

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Shahrukh 501 on at

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RE: Class extensions in D365

This getJobStatus method is returning DataJobStatusDetail object. and this class contains a member variable named ExecutionLog, I need to append some information in this ExecutionLog, so that it will return detailed information.

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Martin Dráb 236,960 Most Valuable Professional on at

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RE: Class extensions in D365

You can apply techniques we already mentioned, such as a post-event handler.

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Shahrukh 501 on at

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RE: Class extensions in D365

Thanks Martin and Andre,

My case was related to Post-Event handler and it is resolved. :)

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geminikartik 241 on at

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RE: Class extensions in D365

HI Shahrukh ,

Have you ever faced below error or system exception while running export Recurring data job from Ax . We are having this outbound integration and when 3rd party application is trying to download zip file from blob provider , they are getting 500 internal system error and even as part of manage messages , I am able to see only Processed message status but not downloaded.

I checked back in event viewer and got below exception details .

EventData>

<Data Name="ComponentName">ActivityRuntime</Data>

<Data Name="exceptionMessage">System.FormatException: Index (zero based) must be greater than or equal to zero and less than the size of the argument list. at System.Text.StringBuilder.AppendFormatHelper(IFormatProvider provider, String format, ParamsArray args) at System.String.FormatHelper(IFormatProvider provider, String format, ParamsArray args) at System.String.Format(IFormatProvider provider, String format, Object[] args) at Microsoft.Dynamics.Platform.Integration.Connectors.Runtime.IntegrationActivityRuntimeCodeMarker.WriteUnhandledException(Exception exception, String message, Object[] args) at Dynamics.AX.Application.DMFIntegrationBridge.`Export(IntegrationBridgeContract bridgeContract) in xppSource://Source/ApplicationFoundation\AxClass_DMFIntegrationBridge.xpp:line 96 at Dynamics.AX.Application.DMFIntegrationBridge.DMFIntegrationBridgeCoCHelper.`Export(DMFIntegrationBridge instance, IntegrationBridgeContract arg0) at Dynamics.AX.Application.DMFIntegrationBridge.Export(IntegrationBridgeContract bridgeContract) at Microsoft.Dynamics.Platform.Integration.Connectors.Runtime.IntegrationActivityRuntime.<Export>d__23.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.Dynamics.Platform.Integration.Connectors.Runtime.IntegrationActivityRuntime.<ExecuteIntegrationAsync>d__21.MoveNext()</Data>

<Data Name="infoMessage">Unhandled exception processing 'Id = 5637146826, Name = Test Outbound, Direction = Outbound, Data project = Test outbound'.</Data>

</EventData>

Somewhere DMFIntegrationBridge class failing during export operation. Please suggest .

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Ehtasham Rahman 672 on at

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RE: Class extensions in D365

Hi Shahrukh,

Can you please paste the snapshot of your code which you have written to append some information with member variable of getJobStatus method? Actually I am trying to do same work but I don't know how to get the member variable in postEventHandler and assign it new value.

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