Microsoft Dynamics AX (Archived)

Try Catch - Throw Error in class method

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Posted on by BuBbA

107

Hi guys,

I have the following issue:

Code example:

ClassMyClass myClass;

try
{

myClass = ClassMyClass::construct();

myClass.doSomething();

}
catch
{

*** Handle error ***

}

Now the question:

Inside the myClass.doSomething(), a validation does a throw error(XXX);

I would expect that my catch is hit and i can handle the error, but instead the error gets trown and i'm not hitting my catch() statement.

Is this normal? What can i do to make sure my catch is getting hit?

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Suggested answer

David Massey on at

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Take a look at this documentation. Pay attention to how try/catch works within a transaction scope (ttsBegin, ttsCommit, ttsAbort).

msdn.microsoft.com/.../aa893385.aspx

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BuBbA 107 on at

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There is no transaction so it shouldn't matter. To test, i tried it with and without a transaction scope but it made no difference. The code just stops at the throw error, no code is executed after, where i would suspect my catch to be hit.

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Hariharans87 3 on at

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Catch should work if you throw the error message

e.g.

throw error('Error message');

But, if you use error method without throw, it won't work like

e.g.

error('Error message');

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BuBbA 107 on at

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I thought it should work, but it doesn't. The class i call is a standard Ax class (SpecTransManager) and it does use "throw error(xxx)" but my catch statement is never hit, code just stops on the throw error.

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Verified answer

Martin Dráb 237,965 Most Valuable Professional on at

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Please put a breakpoint on doSomething() and check the transaction level in debugger. If it's not zero, it's the transaction to blame,

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BuBbA 107 on at

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Yep, that was the tip! When i hit my breakpoint, TTS level was 1, where i expected it to be 0. Apparently in a class my class inherits from, a colleague added a transaction.

Thank you!

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