How to override form control Lookup using extensions. D365FO
In D365FO we have a bunch of events to subscribe on a form control level:
right click on lookup event of control to subscribe the event and paste in class.
[FormControlEventHandler(formControlStr(PayrollEmployerTaxRegion, Overview_StateId), FormControlEventType::Lookup)]
public static void Overview_StateId_OnLookup(FormControl sender, FormControlEventArgs e)
{
// write your logic here
}
Now to cancel parent event, D365FO provide a class FormControlCancelableSuperEventArgs
You can cancel the parent(Original event with below code)
FormControlCancelableSuperEventArgs ce = e as FormControlCancelableSuperEventArgs;
//cancel super() to
prevent error.
ce.CancelSuperCall();
// Here is the complete code sample to override form lookup and cancel the original code.
[FormControlEventHandler(formControlStr(PayrollEmployerTaxRegion, Overview_StateId), FormControlEventType::Lookup)]
public static void Overview_StateId_OnLookup(FormControl sender, FormControlEventArgs e)
{
SysTableLookup sysTableLookup = SysTableLookup::newParameters(tableNum(LogisticsAddressState),
sender);
Query
query = new Query();
// Filter lookup to only show US states
query.addDataSource(tableNum(LogisticsAddressState)).addRange(fieldNum(LogisticsAddressState,
CountryRegionId)).value(LogisticsAddressCountryRegion::findByISOCode(SysCountryRegionCode::countryInfo(curext())).CountryRegionId);
// Sort the lookup by state Id
query.dataSourceTable(tableNum(LogisticsAddressState)).addOrderByField(fieldNum(LogisticsAddressState,
StateId), SortOrder::Ascending);
// Add fields
sysTableLookup.addLookupfield(fieldNum(LogisticsAddressState,
StateId));
sysTableLookup.addLookupfield(fieldNum(LogisticsAddressState,
Name));
// Run lookup
sysTableLookup.parmQuery(query);
sysTableLookup.performFormLookup();
FormControlCancelableSuperEventArgs ce = e as FormControlCancelableSuperEventArgs;
//cancel super() to
prevent error.
ce.CancelSuperCall();
}
