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Dynamics 365 Community / Blogs / Vishal’s blog on MS Dynamics 365 - Technical / AX7 / D3FO: Form extensions...

AX7 / D3FO: Form extensions and their method sequence

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Vishal Tiwari Profile Picture Vishal Tiwari 393
You can extend the functionality of a form by extending its controls and data sources. For example, in a form extension, you can:
·         Add a new control.
·         Enable or disable a control.
·         Change the text or label property of a control.
·         Change a control's visibility.
·         Change a form's help text.
·         Change a form's caption.
·         Add a new data source.
·         Change properties at the data-source level.
·         Add a form part.

Other ways to customise a form, such as reordering controls in the form or subscribing to form or control events, are planned to be included in a future release. In Microsoft Dynamics AX 2012, you could override form methods. In the current version, you use extensions to implement event handlers that are called from the base implementations of form methods. The following table lists each method and its associated events.

Published form DataSource method
Preceding event
Succeeding event
active
N/A
Activated
delete
Deleting
Deleted
validateWrite
ValidatingWriting
ValidatedWrite
write
Writing
Written
create
Creating
Created
executeQuery
N/A
QueryExecuted
linkActive
N/A
PostLinkActive
init
N/A
Initialized
validateDelete
ValidatingDelete
ValidatedDelete
reread
N/A
Reread
selectionChanged
N/A
SelectionChanged
markChanged
N/A
MarkChanged
leaveRecord
LeavingRecord
LeftRecord
Published form Object method
Preceding event
Succeeding event
init
Initializing
Initialized
close
Closing
N/A
run
N/A
PostRun
activate
N/A
Activated
Published form Control method
Preceding event
Succeeding event
modified
N/A
Modified
validate
Validating
Validated
leave
Leaving
LostFocus
enter
N/A
Enter
gotFocus
N/A
GotFocus
clicked
N/A
Clicked
selectionChange
SelectionChanging
N/A
pageActivated
N/A
PageActivated
allowPageDeactivate
AllowPageDeactivate
N/A
expand
Expanding
Expanded
tabChanged
N/A
TabChanged
dialogClosed
N/A
DialogClosed








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