CheckLookupEditorAttribute.FilterField property
namespace: Serenity.ComponentModel assembly: Serenity.Net.Core
Optional filtering field (items will be filtered on this key, e.g. GroupID). Make sure you have the [LookupInclude] attribute on this field of the lookup row, otherwise you'll have empty results as this field won't be available on the client side.
public object FilterField { get; set; }