Learn about C# AutoMapper

What is AutoMapper?

Simply put, it's code that maps one object to another. Get rid of the cumbersome assignment process (the most common is Model --- ViewModel)

 

AutoMapper installation

I am using VS2015 and can directly enter AutoMapper in NuGet to download

 

You can also use console commands

PM> Install-Package AutoMapper

 

Here I define two classes ShopingInfo ShopingInfoViewModel

 public class ShopingInfo:EntityBase
    {

        public string ShopingName { get; set; }

        public int ShopingCount { get; set; }

        public decimal ShopingPric { get; set; }

        public int Stock { get; set; }

        public int Volumeofvolume { get; set; }

        public int ShopingTypeId { get; set; }

        public virtual ShopingType ShopingType { get; set; }
    }

 

    public class ShopingInfoViewModel
    {
        public int ID { get; set; }
       
        public string ShopingName { get; set; }
      
        public int ShopingCount { get; set; }
        
        public decimal ShopingPric { get; set; }
        
        public int Stock { get; set; }
        
        public int Volumeofvolume { get; set; }
      
        public string ShopingTypeName { get; set; }
    }

 

namespace to be used

using AutoMapper;

 

Then a special class was built to store these mappings SourceProfile and inherited Profile

    public class SourceProfile : Profile
    {
       public SourceProfile()
        {
            base.CreateMap<ShopingInfo, ShopingInfoViewModel>();
        }
    }

If we find that there are inconsistent field names in the two categories. 

For example, I changed the ShopingName in the shopingInfoViewModel to Name, then you can write like this

 public class SourceProfile : Profile
    {
       public SourceProfile()
        {
           base.CreateMap<ShopingInfo, ShopingInfoViewModel>();

          // base.CreateMap<ShopingInfo, ShopingInfoViewModel>().ForMember(x => x.Name,
          //      q => { q.MapFrom(z => z.ShopingName);
          //  });
        }
    }

 

Created an intermediate class to encapsulate the above code

  public class AutoMapper
    {
        public static void Start()
        {
            Mapper.Initialize(x =>
            {
                x.AddProfile<SourceProfile>();
            });
        }
    }

 

Then in the global class Global, make the startup initialization load and add the following code

AutoMapper.Start(); 


Okay. The basics are all done. Now test it and 

you can see that it has been mapped. 

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