Microsoft Dynamics AX (Archived)

Super Method

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Posted on by Community Member

Hi,

When ever I need super()?
When should I write my code before super method and when afterwards?

thanks

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Sohaib Cheema 49,438 User Group Leader on at

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Each object (Form, class, report, method) in AX has any parent class. That parent class can be an x++ class or a kernel class. Super() means calling a method with the same name in parent class.

Writing code before super() means, doing something before "execution"

writing code after super() means doing something after "execution"

lest take example of \\Data Dictionary\Tables\CustTable\Methods\insert

now here in this method, writing code before super() means doing ANYTHING before insertion of record

Opposite to that writing code after super() means doing ANYTHING after record is inserted in CustTable

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Community Member on at

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Thankx for your quick answer :).

For example i override the modified() method for a control with the following code:

public boolean modified()

{

boolean ret;

ret = super();

if(ret)

{

...

}

return ret;

}

can you please tell me what the code does?

Thanks

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Sohaib Cheema 49,438 User Group Leader on at

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by definition This method is called from the modified method on controls if the validation methods returned true.

whenever the control is modified this method invokes. The super call manages the table update (by a sequence of calls to validate on the data source, validateField on the table, and modified on the data source).

and when your write following

if(ret)

that means if validations are true or in other words if control has been modified correctly.

now lets suppose if you want to do something before value is actually changes, you can puts you code before super()

else, if you want to do something after value is modified, you can write code after super()

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Ismail Mohamed 576 on at

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if i have command button with super. how i can access to the parent class

Ex. batch order form has Create and Cancel

if i go to design i found Command Button for Create named Ok with no method

and if i override any method like

void clicked()

{

super();

}

now how i can access to parent class

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jaestevan 1,719 on at

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"Command" buttons have implicit kernel commands linked to them, therefore the super() call is a kernel action that is not part of any X++ debuggable object. For regular buttons (no-command), super class can be deleted as by default it does nothing (you are supossed to implement your own actions on the clicked method).

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