Reference Group Control lookup in D365

This post shows how to create lookup for ReferenceGroupControl using extensions.

All we need to do is to register event handler for lookup function and make a lookup little bit differently as shown below.

After handler is registered use the following code.

[FormControlEventHandler(formControlStr(MyWorker, MyWorker_HcmWorkerRecId), FormControlEventType::Lookup)]
public static void MyWorker_HcmWorkerRecId_OnLookup(FormControl sender, FormControlEventArgs e)
{
    MyClass::createLookup(sender);

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

private static void createLookup(FormReferenceGroupControl _ctrl)
{
    SysReferenceTableLookup sysTableLookup = SysReferenceTableLookup::newParameters(tablenum(HcmWorker), _ctrl);
    Query                   query = new Query();

    sysTableLookup.addLookupfield(fieldNum(HcmWorker, PersonnelNumber));
   
    query.addDataSource(tablenum(HcmWorker));
    sysTableLookup.parmQuery(query);
    sysTableLookup.performFormLookup();
}