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Источник: https://dynamicsaxinsight.wordpress....n-x-plus-plus/
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Purpose:

The purpose of this document is to demonstrate how we can enable/disable a form control in X++ based on a business logic.

Product:

Dynamics 365 for Finance and Operations, Platform Update 9.

Development approach:

Customization through extension.

Development:

1. Create a post event handler of a standard form method enabling/disabling the form controls. In this case, we are creating a post event handler of a standard method setFieldAccessHeader of SalesQuotationProjTable form.
2. Please find the event handler method definition as follows.

[PostHandlerFor(formStr(SalesQuotationProjTable), formMethodStr(SalesQuotationProjTable, setFieldAccessHeader))]public static void SalesQuotationProjTable_Post_setFieldAccessHeader(XppPrePostArgs args){ FormRun sender = args.getThis(); FormDataSource salesQuotationTable_ds; SalesQuotationTable salesQuotationTable; salesQuotationTable_ds = sender.dataSource(1); salesQuotationTable = salesQuotationTable_ds.cursor(); sender.control(sender.controlId(formControlStr(SalesQuotationProjTable, DeviceUsageGroup))).enabled((salesQuotationTable.AMDeviceId) ? true : false);}


Источник: https://dynamicsaxinsight.wordpress....n-x-plus-plus/