partial void DeleteItemRead(ItemRead instance);
 partial void UpdateItemRead(ItemRead instance);
		private void detach_ItemReads(ItemRead entity)
		{
			this.SendPropertyChanging();
			entity.Item = null;
		}
 partial void InsertItemRead(ItemRead instance);
		private void attach_ItemReads(ItemRead entity)
		{
			this.SendPropertyChanging();
			entity.Item = this;
		}