C# · 12月 30, 2021

c# – 获取最近创建的实体的ID – ADO实体框架

假设您使用ADO实体框架创建一个对象并保存到数据库,如下面的代码所示. private void CreateAddress(BizObjects.Address address){ var entity = new EntityFramework.Address(); entity.Line1 = address.Line1; entity.Line2 = address.Line2; entity.City = address.City; entity.State = address.State; entity.ZipCode = address.ZipCode; _entities.AddToAddress(entity); _entities.SaveChanges();}

如何检索新创建的对象的ID?

提前致谢.

解决方法 一旦调用“SaveChanges()”,实体对象应该具有由框架填充的ID字段. private void CreateAddress(BizObjects.Address address){ var entity = new EntityFramework.Address(); entity.Line1 = address.Line1; entity.Line2 = address.Line2; entity.City = address.City; entity.State = address.State; entity.ZipCode = address.ZipCode; _entities.AddToAddress(entity); _entities.SaveChanges(); address.Id = entity.Id; // At this point the entity object will have the value of the Id field.}

希望这可以帮助…