private void detach_Ref_AlbumFiles(Ref_AlbumFile entity)
		{
			this.SendPropertyChanging();
			entity.File = null;
		}
		private void attach_Ref_AlbumFiles(Ref_AlbumFile entity)
		{
			this.SendPropertyChanging();
			entity.File = this;
		}
 partial void UpdateRef_AlbumFile(Ref_AlbumFile instance);
 partial void DeleteRef_AlbumFile(Ref_AlbumFile instance);
 partial void InsertRef_AlbumFile(Ref_AlbumFile instance);