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Question

equipment has three items, and carspecification is a list item. In the carspecification , there is an equipmentId property.

How could I able to find equipment item(s) to find only equipment matches with equipmentId in carspecification .

 var equipment = _carService.GetCarEquipment(carId);
 var carSpecification = _carSpecificationService.GetId(specificationId);

I have tried the following, but it does not work.

 var eq = equipment.Select(x => x.Id.Equals(carSpecification.Select(y=> y.EquipmentId)));

Answer 1

您可以使用任何：

var result = equipment.Where(e => carSpecification.Any(s => s.specificationId == e.Id));

Answer 2

equipment.Where(e => carSpecification.Select(c => c.EquipmentId).Contains(e.Id))