/// <summary>
	    /// Deletes rentalorder from the database by the given dto object.
	    /// </summary>
	    /// <param name="rentalorder">The dto object.</param>
	    public void DeleteRentalOrder(RentalOrderDto rentalorder)
	    {
	        this.RentalOrderService.Delete(rentalorder);
	        this.UnitOfWork.SaveChanges();		
	    }
	    /// <summary>
	    /// Adds a new rentalorder from the given dto object into the database.
	    /// </summary>
	    /// <param name="rentalorder">The dto object.</param>
	    /// <returns>The dto key of the newly created rentalorder.</returns>
	    public string CreateRentalOrder(RentalOrderDto rentalorder)
	    {
	        string key = this.RentalOrderService.Add(rentalorder);
	        this.UnitOfWork.SaveChanges();
	        return key;
	    }