Martin Dráb

I recently ran into an unfortunate limitation of .NET Interop from X++ (in D365FO). I wanted to check if an X++ object is of a given type, nevertheless the type used for the variable declaration was a .NET interface. Here is an example: using Microsoft…

In 2018, I wrote the blog post Throwing managed exceptions from X++ in D365FO , where I pondered upon how throwing proper exceptions objects in X++ would be beneficial. This is still true. I also showed a proof of concept how it can be done despite the…

When saving a record, I had to check which fields had changed and react in a special way if only certain fields (and not any other) changed their value. I could iterate all fields and compare their values in two table buffers (the original and the…

When I read Evaldas Landauskas’s blog post Development guidelines: Prefix Vs. Suffix , I thought I would write a comment below the post and share a few ideas, but then I decided that it’d be better to write my own blog post. Here I have a much better…

The product that used to be called Microsoft Dynamics 365 for Finance and Operations (I truly don’t know how I should call it these days) allows defining security elements both by developers (delivered together with code) and by power users though GUI…

Today I took the beta exam MB-500: Microsoft Dynamics 365: Finance and Operations Apps Developer ; I think it’s going to be made generally available on January. I was already planning to take it when I received an email with a significant discount, therefore…

There is a trend in the .NET world to make time-consuming calls asynchronous, to prevent applications from getting blocked when waiting for a response from a web service and things like that. Many existing APIs were enhanced with asynchronous variants…

When working with metadata in Dynamics 365 for Finance and Operation, the usual approach is using the MetadataSupport class . It’s a simplified interface to actual metadata classes, which is easy to use, but it doesn’t expose everything. For instance…

I’ve run into a problem that reminded me that while X++ types and corresponding CLR types (such as str and System.String ) can often be user interchangeably, they aren’t the same. I was trying to convert a utcdatetime value to the standard “sortable…

I got an .xpo file from an older version of AX with some code of interest and because it had a few thousand lines, it wasn’t exactly easy to navigate. At least splitting it by object would make my life much easier. Fortunately I looked at the internet…

I’m not sure that everybody is aware that a single event handler method (in Dynamics 365 for Finance and Operations) can be decorated with several event handler attributes. For example, a common method can handle both inserts and updates. [ DataEventHandler…

Development VMs for Dynamics 365 for Finance and Operations come with a cross-reference database that doesn’t match the actual code and metadata. There are many annoying references to Microsoft’s own test models, which aren’t included and therefore such…

This blog post explains a problem that you can run into when using reference group controls with grouped data – and a solution for this problem. I have a table which stores references to workers. The field has HcmWorkerRecId data type, i.e. it stores…

Yesterday Michael Fruergaard Pontoppidan published a brief blog post New capability in X++ : The In operator . He mentioned that this feature went unnoticed by most, which is my case too. And I didn’t find anything even when I explicitly looked for more…

What I really miss in X++ is the ability to throw exception objects. If you throw an exception in X++, it’s just a number defining what kind of exception it is, which usually says just “Error” (Exception::Error). You also typically add a message to infolog…

You can use Dynamics 365 > Find labels… in Visual Studio to find D365FO labels, but its capabilities are quite limited. Sometimes a better option is searching through the underlying text files directly and you can easily automate it with Powershell.…

Dynamics 365 for Finance and Operations runs completely in “.NET”, which has some interesting implications. The runtime and tools working with it (such as Visual Studio) offer many new options that may be very useful. One of these options is the ability…

Sometimes you may want to generate a Word document from code in D365FO, which gives you much more control over the result than if you simply printed a report to Word. Here is a very brief example of how you can do it. Start with creating an X++ project…

You can easily send a D365FO report in email just by configuring print destination to Email and setting a few properties. You can do the same from code, where you can also set the body. You must create an instance of SrsReportEMailDataContract class…

A comment below my blog post  Printing reports from code in AX2012 asked me to provide an example for D365FO. Here is it. The code is virtually identical. Only writing a file to a shared folder doesn’t make a good sense in cloud, therefore I changed…

I’m safely back in Prague and I would like to thank everybody who attended Dynamics 365 Saturday in Johannesburg . There were so many of you! And I want to give special thanks to people who did all the work to make the event happen and those who cared…

I recently had to move a form to another package, because we decided to extract some functionality to its own independent package. I moved files, built both packages and everything looked fine, so I started making changes for a new requirement. But…

If you call OData services in AX 7 (Dynamics 365 for Finance and Operations), you typically get data in JSON format, like this: { "@odata.context":"https://myaxinstance.cloudax.dynamics.com/data/$metadata","value":[ { "name":"ElectronicPaymentTypes…

A few days ago I was getting latest changes from VSTS to an AX 7 development box when it failed on a certain (custom) .dll file, because Visual Studio wasn’t able to overwrite the file. I made sure that all AX services are down, but it made no difference…

I’ve recently run into a problem with Recurring Integrations Scheduler and I think I won’t be the only one, therefore I’m going to explain it here. The Recurring Integrations Scheduler (RIS) supports both the old recurring integrations API (enqueue/dequeue…