private void detach_Bidders1(Bidder entity)
		{
			this.SendPropertyChanging();
			entity.User1 = null;
		}
		private void attach_Bidders(Bidder entity)
		{
			this.SendPropertyChanging();
			entity.User = this;
		}
 partial void DeleteBidder(Bidder instance);
 partial void UpdateBidder(Bidder instance);
 partial void InsertBidder(Bidder instance);
		private void detach_Bidders(Bidder entity)
		{
			this.SendPropertyChanging();
			entity.AuctionEvent = null;
		}