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Dynamics object not initialized

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Posted on by Rohin

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Hi All,

I am following below blog for learning new things in AX: https://community.dynamics.com/ax/b/daxmusings

Today ,I was reading below post on this blog : http://daxmusings.codecrib.com/2014/11/ax2012-extension-framework.html

and tried to do same in my test environment and i am successful in first step (using Sub class and constructors ) but when i tried to do with extension (with attribute class) and run main method it gives me error

" Dynamics object not initialized " even i read Joris told "our static main was already using construct, you can just re-run the main " so i haven't changed main mathod . my main method & construct is looks like :

7115.main.PNG

your suggestion on this would be appreciated.

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Martin Dráb 237,965 Most Valuable Professional on at

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If you use the debugger (which you should do every time when trying to debug your code), you'll likely find that getClassFromSysAttribute() returns null and you obviously can't call methods on null references. Therefore the problem is in the part that you didn't show us - review again that your class inheritance and attributes are set properly, and consider if you can't have wrong values in the cache.

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Rohin 4,624 on at

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I used debugger on construct method and i found (_products gets the value "AX" but dynamics object is set to null) . I am getting not any help from this . Note i have reviewed again all and its exactly same as in blog . can you suggest on this ?

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Martin Dráb 237,965 Most Valuable Professional on at

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As I said, the problem is a different part of code than what you showed us. You expect people to find bugs in your code if you don't show or at least describe what you've done. If you think that your code is correct, maybe it's the cache, as I suggested at the end of my reply.

If you want to know exactly what happens and where, use the debugger to walk through code inside getClassFromSysAttribute().

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Mea_ 60,284 on at

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Hey Visvash Walia,

Did you try to follow instructions in the end of the blog post regarding the cache ?

"...it may not pick up new classes or changed attributes. From the Tools menu, you can run Tools / Caches / Refresh Elements to flush the cache so it will pick up your changes."

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Rohin 4,624 on at

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Okay , I''ll show you other part of code:-

Dynamics Class code :

Other Main() and construct() method of this class already shared above.

DynamicsProductsAttribute Class code :

DynamicsAX class Code:

Would be great if you find any wrong in above code ?

And, I already refresh Elements (Tools >cache >RefreshElement) mentioned in blog. but not helps.

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Rohin 4,624 on at

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Hello Ievgen ,

I already did . but not helps

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Martin Dráb 237,965 Most Valuable Professional on at

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I think the bug is in the fact that the constructor of DynamicsProductsAttribute class requires a parameter. Remove it and try it again.

By the way, I think that putting code here would be easier for you (you don't have to make and upload images), it would show more information (you could easily include all methods) and it would allow people to copy your code and run it, which would increase chances to get an answer.

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Rohin 4,624 on at

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If i am understanding you correctly, I need to remove parameter of New constructor of DynamicsProductAttribute Class ??

If so, then how can i decorate my subClass(DynamicsAX) ??

And i'll keep in mind next time to post directly code not images.

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Martin Dráb 237,965 Most Valuable Professional on at

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Ah, sorry, that's the attribute. I got confused by all those images and I thought I was looking at the sub-class.

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Rohin 4,624 on at

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hi Martin ,

I found the error but i really don't understand this .

Error is in parameter of New () of DynamicsProductAttribute Class , and I changed the code to :

public void new(DynamicsProducts _dynamicsproducts)
{
super();
this.parmDynamicsProducts(_dynamicsproducts);
}

Notice : before It was (DynamicsProducts _products ) and now it changed to (DynamicsProducts _dynamicsProducts).

And now it works correctly and give result .

But i want you to give suggestion on this please why it behaves so ?

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