The method is designed for creating a new entity instance and simultaneous attaching it to the data context
The method creates a new entity instance of the specified class type. The attributes forming the entity primary key will be initialized by the specified values. The entity instance created by this method is initially attached to the data context and placed to the object cache (in contrast to the TCustomEntityContext.CreateEntity method), therefore you can already perform modification operations for the instance: TCustomEntityContext.Delete, M:Devart.EntityDAC.TEntityContext.Save(Devart.EntityDAC.TMappedEntity,System.Boolean), TCustomEntityContext.Cancel, without pre-calling TCustomEntityContext.Attach.
var EmpEntity: TEntity; begin EmpEntity := Context.CreateAttachedEntity(TEmp, [1, 1]); // ... end;