How to implement mapping via automapper in ASP.NET MVC - asp.net-mvc

Question

I have two class. PRODUCT comes from Entity Framework, and Product in Domain solution: Here are the details:
PRODUCT class (source):
namespace SportsStore.Domain
{
using System;
using System.Collections.Generic;
public partial class PRODUCT
{
public int PRODUCT_ID { get; set; }
public string PRODUCT_NAME { get; set; }
public string PRODUCT_DESCRIPTION { get; set; }
public decimal PRODUCT_PRICE { get; set; }
public string PRODUCT_CATEGORY { get; set; }
}
}
Product class (destination):
namespace SportsStore.Domain.Entities
{
public class Product
{
[HiddenInput(DisplayValue = false)]
public int ProductId {get;set;}
public string ProductName {get;set;}
[DataType(DataType.MultilineText)]
public string ProductDescription {get;set;}
public decimal ProductPrice {get;set;}
public string ProductCategory { get; set; }
}
}
Here is the ProductViewModel that used throughout the project:
public class ProductsListViewModel
{
public IEnumerable<Product> Products { get; set; }
public PagingInfo _pagingInfo { get; set; }
public PagingInfo PagingInfo { get; set; }
public string CurrentCategory { get; set; }
}
Here is my mapping in the project, I have a automapper to map these two.
public static class AutoMapperConfig
{
public static void RegisterMappings()
{
AutoMapper.Mapper.CreateMap<PRODUCT, Product>();
AutoMapper.Mapper.CreateMap<PRODUCT, Product>()
.ForMember(dest => dest.ProductCategory,
opts => opts.MapFrom(src => src.PRODUCT_CATEGORY));
AutoMapper.Mapper.CreateMap<PRODUCT, Product>()
.ForMember(dest => dest.ProductDescription,
opts => opts.MapFrom(src => src.PRODUCT_DESCRIPTION));
AutoMapper.Mapper.CreateMap<PRODUCT, Product>()
.ForMember(dest => dest.ProductId,
opts => opts.MapFrom(src => src.PRODUCT_ID));
AutoMapper.Mapper.CreateMap<PRODUCT, Product>()
.ForMember(dest => dest.ProductName,
opts => opts.MapFrom(src => src.PRODUCT_NAME));
AutoMapper.Mapper.CreateMap<PRODUCT, Product>()
.ForMember(dest => dest.ProductPrice,
opts => opts.MapFrom(src => src.PRODUCT_PRICE));
}
}
I call RegisterMappings in the Global.asax.cs's Application_Start.
protected void Application_Start()
{
AutoMapperConfig.RegisterMappings();
}
Under these circumstances, I read the contents from Entity framework, their type is PRODUCT, when I try to assign it to Product, I got error. The point that I get error is here:
public ActionResult List(string category,int page = 1)
{
List<PRODUCT> pr = null;
using(ProductContext pb = new ProductContext())
{
ProductsListViewModel model = new ProductsListViewModel
{
//Error is here
Products = pb.ProductsList.Where(p => category == null || p.PRODUCT_CATEGORY == category).OrderBy(i => i.PRODUCT_ID).Skip((page - 1) * PageSize).ToList().Take(PageSize).ToList(),
_pagingInfo = new PagingInfo
{
CurrentPage = page,
ItemsPerPage = PageSize,
TotalItems = category == null ? pb.ProductsList.Count() : pb.ProductsList.Where(e => e.PRODUCT_CATEGORY == category).Count()
},
CurrentCategory = category
};
return View(model);
}
}
The error is this:
Cannot implicitly convert type 'System.Collections.Generic.List' to 'System.Collections.Generic.IEnumerable'. An explicit conversion exists (are you missing a cast?)
How can I overcome this? Thanks in advance.

Answer 1

The error says everything you need to know. In somewhere you are trying to put a List of objects to a IEnumerable of the same objects.
It seems to me that you shoud alter the line
Products = pb.ProductsList.Where(p => category == null || p.PRODUCT_CATEGORY == category)
.OrderBy(i => i.PRODUCT_ID)
.Skip((page - 1) * PageSize)
.ToList().Take(PageSize).ToList()
into
Products = pb.ProductsList.Where(p => category == null || p.PRODUCT_CATEGORY == category)
.OrderBy(i => i.PRODUCT_ID)
.Skip((page - 1) * PageSize)
.Take(PageSize).AsEnumerable()