Custom lookup field and group reference field D365 for finance and operations

Hi all following code snippet for custom lookup. Copy the onlookup event handler and copy in extension class and the following code snippet

Field based

[FormControlEventHandler(formControlStr(Txxxx, Txxxx_ChildName), FormControlEventType::Lookup)]
public static void xxxxx_DssChildName_OnLookup(FormControl sender, FormControlEventArgs e)
{
Query query = new Query();
QueryBuildDataSource qbds;
QueryBuildDataSource qbdsJoin;
SysTableLookup sysTableLookup = sysTableLookup::newParameters(tableNum(DirPartyTable), sender);

qbds= query.addDataSource(tableNum(DirPartyTable));
qbdsJoin= qbds.addDataSource(tableNum(DirPartyRelationship));
//qbdsJoin.relations( false);
//qbdsJoin.fields().dynamic(NoYes::Yes);
// hcmWorkerCaller = HcmWorker::find(currentWorker());
// qbds.addRange(fieldNum(DirPartyTable, RecId)).value(int642Str(HcmWorker::find(currentWorker()).Person));
qbdsJoin.addRange(fieldNum(DirPartyRelationship, parentparty)).value(int642Str(HcmWorker::find(currentWorker()).Person));
qbdsJoin.addLink(fieldNum(DirPartyTable, RecId), fieldNum(DirPartyRelationship, childparty));
qbdsJoin.joinMode(JoinMode::InnerJoin);

sysTableLookup.parmQuery(query);
sysTableLookup.addLookupfield(fieldNum(DirPartyTable, Name), true);
sysTableLookup.addLookupfield(fieldNum(DirPartyTable, RecId));
sysTableLookup.performFormLookup();

FormControlCancelableSuperEventArgs event = e as FormControlCancelableSuperEventArgs;
event.CancelSuperCall();

}

Reference based is as follow

[FormControlEventHandler(formControlStr(xxxxx, Txeee_dddd), FormControlEventType::Lookup)]
public static void ddddee_DSSPerson_OnLookup(FormControl sender, FormControlEventArgs e)
{

Query query = new Query();
QueryBuildDataSource qbds;
QueryBuildDataSource qbdsJoin;
SysReferenceTableLookup _sysTableLookup = SysReferenceTableLookup::newParameters(tableNum(DirPartyTable), sender);

qbds= query.addDataSource(tableNum(DirPartyTable));
qbdsJoin= qbds.addDataSource(tableNum(DirPartyRelationship));
//qbdsJoin.relations( false);
//qbdsJoin.fields().dynamic(NoYes::Yes);
// hcmWorkerCaller = HcmWorker::find(currentWorker());
// qbds.addRange(fieldNum(DirPartyTable, RecId)).value(int642Str(HcmWorker::find(currentWorker()).Person));
qbdsJoin.addRange(fieldNum(DirPartyRelationship, parentparty)).value(int642Str(HcmWorker::find(currentWorker()).Person));
qbdsJoin.addLink(fieldNum(DirPartyTable, RecId), fieldNum(DirPartyRelationship, childparty));
qbdsJoin.joinMode(JoinMode::InnerJoin);

_sysTableLookup.parmQuery(query);
_sysTableLookup.addLookupfield(fieldNum(DirPartyTable, Recid));
_sysTableLookup.addLookupfield(fieldNum(DirPartyTable, Name));
//, true);
// _sysTableLookup.addLookupfield(fieldNum(DirPartyTable, recid));
_sysTableLookup.performFormLookup();

FormControlCancelableSuperEventArgs event = e as FormControlCancelableSuperEventArgs;
event.CancelSuperCall();
}