Overrides the GetHashCode routine. It will calculate a hashcode for this set of entity fields using the eXclusive OR of the hashcodes of the primary key fields in this set of entity fields, if this fields object is part of an entity. If not, it will return this object's hashcode, which is also done when no pk fields are present if this fields object is part of an entity

public override int GetHashCode()

Public Overrides Function GetHashCode As Integer