Using ValueInjecter to map between objects with different property names - asp.net-mvc

Question

How do I map a property from an object to another object with a different property name?
I have a Product class that looks like this:
public class Product : IEntity
{
public int Id { get; set; }
public string Name { get; set; }
}
And the view model looks like:
public class ProductSpecificationAddViewModel
{
public int ProductId { get; set; }
public string ProductName { get; set; }
}
I need to do the following mapping:
Product.Id => ProductSpecificationAddViewModel.ProductId
Product.Name =>ProductSpecificationAddViewModel.ProductName
Here is my action method:
public ActionResult Add(int id)
{
Product product = productService.GetById(id);
// Mapping
//ProductSpecificationAddViewModel viewModel = new ProductSpecificationAddViewModel();
//viewModel.InjectFrom(product);
return View(viewModel);
}
How would I do this?

Answer 1

If you are using ValueInjecter then you would write a ConventionInjection. See the second sample here
public class PropToTypeProp : ConventionInjection
{
protected override bool Match(ConventionInfo c)
{
return c.TargetProp.Name == c.Source.Type.Name + c.TargetProp.Name;
}
}
this injection will do from all properties of TSource.* to TTarget.TSource+*, so you do:
vm.InjectFrom<PropToTypeProp>(product);

Answer 2

You can do this easily with AutoMapper. By default is uses convention (i.e. Id maps to Id and Name to Name), but you can also define custom mappings.
Mapper.CreateMap<Product, ProductSpecificationAddViewModel>()
.ForMember(destination => destination.ProductName,
options => options.MapFrom(
source => source.Name));
Your contoller mapping code will be then this simple :
Mapper.Map(product, viewModel);