How to use Macro in AX 7

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Posted on by Yuji

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Hi,

In AX 2012, if we use macro in the code, just declare #define in the beginning of the methods. How do we use Macro in AX 7 now?

Thanks,

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krishna.rao@dax 3,006 on at

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In AX7 X++ now supports the const keyword.

It replaces most use cases of macros.

Have a look here for more details

blogs.msdn.microsoft.com/.../x-in-ax7-const-keyword

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Faisal Fareed 10,796 User Group Leader on at

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Hi Yuji,

In short, macros are now used as constants in D365O have a look on this post to see how you can use both.

devserra.wordpress.com/.../macro-or-const-on-ax-7-what-use

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Basheer17 2,720 on at

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You can use macros the same way we did it in AX 2012. However try to use "const", in some cases it's not possible. For instance

#localMacro.DateFilter

((priceDiscTable.FromDate <= toDate || !toDate)

&& (priceDiscTable.ToDate >= fromDate || !priceDiscTable.ToDate))

#endMacro

In this case you can follow traditional approach.

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André Arnaud de Cal... 301,088 Super User 2025 Season 2 on at

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Hi Yuji,

One small addition here: The use of macros was powerful to also reuse blocks of coding. At compilation the macro part will be inserted in the coding which takes additional compilation time. For this reason, try to avoid use of macros. Microsoft is aiming to get compilations as fast as possible. For this reason, it could be the case that macros will be depreciated in future, but I'm not sure about this.

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Joris dG 17,775 on at

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In addition to performance, macros break a lot of development tooling. If you use macros to insert code blocks, none of the dev tooling can see that code. So things like code upgrade tools, visual studio add-ins, and any future tooling can never understand the macros, since those tools work against code, and macros are not "resolved" (/replaced) until compilation.

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Vilmos Kintera 46,149 on at

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Take a look at the video from last years' AX technical conference about the new development environment, where we learned that Macros are Evil in AX 7.

daxioms.blogspot.hu/.../ex-plus-plus-x-for-those-not-into_21.html

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Faisal Fareed 10,796 User Group Leader on at

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Vilmos Kintera Are you able to open this link to watch video - it's not working for me and I am getting error

An error occurred while processing your request.

Reference #97.cf18ae8c.1490135816.7800529

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Vilmos Kintera 46,149 on at

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I have checked the central site for conference contents:

mbs.microsoft.com/.../IS_ConferencePresentationsVideos

There is a note there saying they had to remove all videos, and it is available upon request by emailing adocs@microsoft.com

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Faisal Fareed 10,796 User Group Leader on at

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Thanks Vilmos

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