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How to write the extension class for Existing Forms

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Hi Experts,

How to write the extension class for Existing Forms (Source Code Methods, Data Source Methods, Field Methods and control Methods)

Chain of Command

Your help will be much appreciated.

Thanks in advance,

Phani

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nmaenpaa 101,162 Moderator on at

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Hi Phani AX2012,

which version are you asking about? You posted in D365 forum, but used tags ax2012 and Dynamics 365?

In AX2012 you can't write such extensions.

In D365FO you can use Chain of Command, check this doc page: docs.microsoft.com/.../method-wrapping-coc

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ergun sahin 8,826 Moderator on at

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www.arbelatech.com/.../dynamics-365-finance-operations-chain-of-command-new-features.html

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Hi Ergun,

Thanks for replying very fast.

How to create new method under forms , datasources and fields inside the datasource for an exsting form. I have gone through link which is explaining for existing methods extension.

Can you please help on this.

Thanks,

Phani

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ergun sahin 8,826 Moderator on at

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anithasantosh.wordpress.com/.../

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nmaenpaa 101,162 Moderator on at

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Hi Phani,

you can use Chain of Command to create new methods on objects. The syntax is exactly the same! The only difference is that you don't call next because there's no base method that you would call.

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Hi Nikolaos,

Thanks for coming forward to answer this question.

Do I need to create separate xpp file in d365 for the methods that are under forms and data sources and fields in the extended form. Please confirm?

Thanks,

Phani

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ergun sahin 8,826 Moderator on at

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You can add newMothod in COC, and call that. Just dont forgot where are you creating method (form or ds or on a field)

anithasantosh.wordpress.com/.../

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Hi Ergun,

Sorry I could not able to catch your point here. I need to create a new method under the existing data source of existing form . How do I achieve this, Same way for existing fields. do i need to create separate class xpp files for ds and fields .

Thanks,

Phani

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nmaenpaa 101,162 Moderator on at

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Each form data source, form control etc is a separate class and you need to create separate extension classes.

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ergun sahin 8,826 Moderator on at

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[ExtensionOf(formDataSourceStr(SalesCreateOrder,SalesTable))] final class SalesCreateOrderDataSource_Extension { public void write() { next write(); FormDataSource formDS = this; SalesTable salesTable = formDS.cursor();; this.setIsManualCreated(); } public void setIsManualCreated() { salesTable.IsManualCreated = true; } }

Instead of using COC for this case, Creating a event handler makes more sense, but the usage is that way.

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