partial void DeleteExpense(Expense instance);
 partial void UpdateExpense(Expense instance);
 partial void InsertExpense(Expense instance);
		private void detach_Expenses1(Expense entity)
		{
			this.SendPropertyChanging();
			entity.User1 = null;
		}
		private void attach_Expenses1(Expense entity)
		{
			this.SendPropertyChanging();
			entity.User1 = this;
		}
		private void detach_Expenses(Expense entity)
		{
			this.SendPropertyChanging();
			entity.AuctionEvent = null;
		}