Extensions

State of .NET Affairs

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I said a word or two about progress last week. Apparently, VS Code is not the only place where we take a small step back to be able to make a huge leap forward; .NET might seem like another one.

You know it, right? You know that if you want to run your .NET code in D365 for Financials, you are out of luck, and you do know that this applies to as much to Microsoft .NET Framework out-of-the-box types as it does to your own, custom-built .NET assemblies. If you don’t know that yet, then let me bring you up to date: In your D365 apps built on Extensions “v2” technology, you won’t be able to use anything .NET; you simply won’t be able to compile AL code that includes a DotNet variable declaration.

This is neither fake news, nor is it news per se. It has been known at least since October last year when Microsoft first presented AL Language extension for VS Code during Directions US in Phoenix. Soon after the VS Code session there was a round table (in all honesty, I have never seen a table, let alone a round one, at any of round table sessions at any conference) on the topic of .NET future, and the mood was grim. At first everyone thought it was a bad joke, then all held hopes high that Microsoft is simply “feeling the pulse” to see how the channel would react to such a disturbing change. But soon it became obvious that .NET interoperability is on its way to be gently ushered out of the (relevant) technology stack of NAV and that we should start getting ready for the day when it’s not there anymore.

So, what is the current state of .NET in NAV, what is the future of it, and what can you do about it?

Let’s take them one by one.

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HelloWorld.al

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Finally. Not quite, but still – finally! We finally get the first public glimpse of future of AL code writing, courtesy of Microsoft Dynamics NAV development team.

As you might know, Microsoft is working around the clock to enable new kind of programming for NAV: using Visual Studio Code instead of Microsoft Dynamics NAV Development Environment. They announced it with due fanfare at Directions US, Directions EMEA, and NAV TechDays, and now the NAV community is biting their fingernails off waiting for Microsoft to actually release the thing.

They said some kind of preview will be made somewhat available sometime in December this year, but for now we have got the first glimpse of the new AL syntax.

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Quick Tip: Extension Demo Data

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Extensions are a hot topic these days. There was a ton of sessions at both Directions events, likely also at NAVUG, and most of the talks you could hear while mingling around was extensions this, extensions that.

Chances are – you are going to be writing your extensions in a foreseeable future.

However, there is a catch with extensions – while it may be easy to load them up into an environment, unlike Cronus database your extensions must populate the database with their own demo or starter data. Otherwise, they will be pretty much useless.

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