Question about [] in X++

(0) Share

Report

Posted on by Community Member

I started learning AX today, and I saw an example:

[
DataContractAttribute,
SysOperationContractProcessingAttribute(
classStr(HW_Apgiam_UI),
SysOperationDataContractProcessingMode::
CreateUIBuilderForRootContractOnly)
]

class HW_Apgiam_CT implements SysOperationInitializable
{
    Str1260   companycode;
   // StartDate fromDate;
    EndDate toDate;
    Str1260 mainAccountId;
    Str1260 vendAccount;
    CurrencyCode currency;
}

and

[
    DataMemberAttribute("CompanyCode"),
    SysOperationLabelAttribute(literalstr("Company Code :"))
]
public Str1260 parmCompany(Str1260 _companycode = companycode)
{
    companycode = _companycode;

    return companycode;
}

Can anyone tell me the code inside "[]" can do, I can not find out the answer on the internet.

Thanks.

*This post is locked for comments

I have the same question (0)

All responses (1)

Answers (1)

Verified answer

Martin Dráb 239,392 Most Valuable Professional on at

Like (2)

Report
Copy link

Link copied!

The things inside [ ] are "attributes".

They're used to add additional information to classes and methods. In your example, attributes say that the class is a data contract (AX knows how to serialize data contract classes), that there is another class (HW_Apgiam_UI) that should be used for generating a dialog for this contract, which label should be used in the dialog for Company and so on.

By the way, the value of SysOperationLabelAttribute is wrong. It should be a label ID, so there may be translations to other languages. It also shouldn't suffixed with " :".

Was this reply helpful? Yes No