问题 Add custom feature checkbox is not showing in custom feature UI, My finding var featureAttributes = cache.GetAttributes(null, field).OfType<FeatureAttribute>(); giving 0 featureAttributes, that's-why it is not visible while i have added Features.xml file with proper tag as suggested in documentation, any thing else am i missing? 回答1: All you should need is the table extension for the FeatureSet table. Here is an example: public sealed class FeaturesSetExtension : PXCacheExtension<PX.Objects