Solved

Using AutoMapper with flattened, nested classes

Posted on 2016-09-10
4
48 Views
Last Modified: 2016-09-16
I am using AutoMapper 4.2 in my .net project and am having problems having flattened properties map from the ViewModel back to the View.   The property maps fine from View to ViewModel but not the other way around.

In the following example, Customer is configured as nested property of Order.  The associated ViewModel flattens Customer.Name to the CustomerName string property.

    public class Customer
    {
        public int Id { get; set; }
        public string Name { get; set; }
        public decimal CreditLimit { get; set; }
        public decimal RemainingCredit { get; set; }
    }

    public class Order
    {
        public int Id { get; set; }
        public Customer Customer { get; set; }
        public int TotalQty { get; set; }
        public decimal TotalValue { get; set; }
        public DateTime ShipDate { get; set; }

        public Order()
        {
            Customer = new Customer();
        }
    }

    public class OrderViewModel
    {
        public int Id { get; set; }
        public string CustomerName { get; set; }
        public int TotalQty { get; set; }
    }

Open in new window


The below "Test Model => ViewModel" runs great with orderViewModel1.CustomerName set to "Abe Anton".  However the "Test ViewModel => Model" section does not work, with order2.Customer.Name set to Null.

            //set up automapper
            var config = new MapperConfiguration(cfg => {
                cfg.CreateMap<OrderViewModel, Order>();
                cfg.CreateMap<Order, OrderViewModel>();
            });
            var mapper = config.CreateMapper();

            //Test Model => ViewModel 
            var order1 = new Order();
            order1.Customer.Name = "Abe Anton";
            order1.TotalQty = 1;
            var orderViewModel1 = mapper.Map<OrderViewModel>(order1);

            //Test ViewModel => Model 
            var orderViewModel2 = new OrderViewModel();
            orderViewModel2.CustomerName = "Betty Basin";
            orderViewModel2.TotalQty = 2;
            var order2 = mapper.Map<Order>(orderViewModel2);

Open in new window

0
Comment
Question by:canuckconsulting
  • 3
4 Comments
 
LVL 8

Accepted Solution

by:
Prakash Samariya earned 500 total points
ID: 41794012
You can try with custom mapping with auto-mapper
 var config = new MapperConfiguration(cfg => {
                cfg.CreateMap<OrderViewModel, Order>();
                cfg.CreateMap<Order, OrderViewModel>().ForMember(o => o.Name , b => b.MapFrom(z => z.CustomerName ));
            });

Open in new window



https://github.com/AutoMapper/AutoMapper/wiki/Custom-value-resolvers
0
 
LVL 8

Expert Comment

by:Prakash Samariya
ID: 41801240
@canuckconsulting, didn't you get your answer?

Hope you might got resolution from my answer!
0
 

Author Closing Comment

by:canuckconsulting
ID: 41801244
Thansk Prakash and sorry for the late reply.
1
 
LVL 8

Expert Comment

by:Prakash Samariya
ID: 41801245
Your welcome :)
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
detecting  the added row index in a datagridview 3 60
Stream.BeginRead and Stream.EndRead in .NET Core 5 37
Replace &lt; with < 14 56
Code works but it's slow 24 40
For those of you who don't follow the news, or just happen to live under rocks, Microsoft Research released a beta SDK (http://www.microsoft.com/en-us/download/details.aspx?id=27876) for the Xbox 360 Kinect. If you don't know what a Kinect is (http:…
Exception Handling is in the core of any application that is able to dignify its name. In this article, I'll guide you through the process of writing a DRY (Don't Repeat Yourself) Exception Handling mechanism, using Aspect Oriented Programming.
This is used to tweak the memory usage for your computer, it is used for servers more so than workstations but just be careful editing registry settings as it may cause irreversible results. I hold no responsibility for anything you do to the regist…
With the power of JIRA, there's an unlimited number of ways you can customize it, use it and benefit from it. With that in mind, there's bound to be things that I wasn't able to cover in this course. With this summary we'll look at some places to go…

910 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

18 Experts available now in Live!

Get 1:1 Help Now