D365: Create lookup in X++

Product:

Dynamics 365 for Finance and Operations

Purpose:

The purpose of this document is to demonstrate how we can create a lookup in X++ and attach it to an extension field added to the form extension of standard Sales order form. This is a good example to see how we can use event handling to achieve our goal without modifying the standard code.

Business requirement:

Display contacts of the customer in a lookup for which the sales order has been raised.

Development:

You can find the event handler below which handles the lookup event of a form control. This form control is added to the extension of SalesTable standard AX form.

[FormControlEventHandler(formControlStr(SalesTable, SixSalesOrderConfirmation_SixCustContactPersonId),
FormControlEventType::Lookup)]
public static void SixSalesOrderConfirmation_SixCustContactPersonId_OnLookup(FormControl sender, FormControlEventArgs e)
{
Query query;
QueryBuildDataSource qbdsContactPerson;
QueryBuildDataSource qbdsCustTable;
QueryBuildDataSource qbdsSalesTable;
SysTableLookup sysTableLookup;
SalesId salesId;
FormControlCancelableSuperEventArgs event;

event = e as FormControlCancelableSuperEventArgs;
salesId = sender.formRun().design().controlName(formControlStr(SalesTable, SalesTable_SalesId)).valueStr();

query = new Query();
qbdsContactPerson = query.addDataSource(tableNum(ContactPerson));

qbdsCustTable = qbdsContactPerson.addDataSource(tableNum(CustTable));
qbdsCustTable.joinMode(JoinMode::InnerJoin);
qbdsCustTable.relations(false);
qbdsCustTable.addLink(
fieldNum(ContactPerson, ContactForParty),
fieldNum(CustTable, Party));

qbdsSalesTable = qbdsCustTable.addDataSource(tableNum(SalesTable));
qbdsSalesTable.joinMode(JoinMode::InnerJoin);
qbdsSalesTable.relations(false);
qbdsSalesTable.addLink(
fieldNum(CustTable, AccountNum),
fieldNum(SalesTable, CustAccount));

qbdsSalesTable.addRange(fieldNum(SalesTable, SalesId)).value(SysQuery::value(salesId));

sysTableLookup = SysTableLookup::newParameters(tableNum(ContactPerson), sender);
sysTableLookup.addLookupfield(fieldNum(ContactPerson, ContactPersonId));
sysTableLookup.addLookupfield(fieldNum(ContactPerson, Party));
sysTableLookup.parmQuery(query);
sysTableLookup.performFormLookup();

event.CancelSuperCall();
}