RelatedEnd kan inte returneras av denna RelationshipManager. En relaterad RelatedEnd kan bara returneras av en RelationshipManager för objekt som antingen spåras av ObjectStateManager eller som implementerar IEntityWithRelationships.
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English version
The RelatedEnd cannot be returned by this RelationshipManager. A RelatedEnd can only be returned by a RelationshipManager for objects that are either tracked by the ObjectStateManager or that implement IEntityWithRelationships.
.Net Framework