How to create a map from model to Entity, and Entity to model, with AutoMapper?

Question

I have a model

class Account 
{
    public string Name { get; set; }
    public string EmailAddress1 { get; set; }
}

Is it possible to configure AutoMapper to somehow loop through each property on my class and map it to the correct Entity value.

I am able to make a converter with reflection myself:

public Entity ConvertToEntity()
{
    var propertyDict = typeof(Account).GetProperties()
      .Select(x => new KeyValuePair<string, object>(x.Name, x.GetValue(typeof(Account))));
    var entity = new Entity();

    foreach (var prop in propertyDict) t[prop.Key] = prop.Value;

    return entity;
 }

But how can i achieve the same kind of functionality with AutoMapper's CreateMap?

Answer 1

Suppose you create marker interface like

// marker interface
public interface ICrmBusinessObject { }

public class MyAccount : ICrmBusinessObject
{
  public string EmailAddress1 { get; set; }
}

Then you can define custom mapper function to convert those:

Mapper.Initialize(cfg => {
  cfg.CreateMap<ICrmBusinessObject, Entity>()
    .AfterMap((crmEntity, entity) =>
    {
      var type = crmEntity.GetType();
      var propertyDict = type.GetProperties()
        .Select(x => new KeyValuePair<string, object>(x.Name.ToLowerInvariant(),
          x.GetValue(crmEntity)));

      foreach (var prop in propertyDict)
      {
        entity[prop.Key] = prop.Value;
      }
    });
});

And you can use mapper like:

var myEntity = new MyAccount { EmailAddress1 = "me@contosco.com" };
var convertedEntity = Mapper.Map<Entity>(myEntity);
// me@contosco.com
Console.Out.WriteLine(convertedEntity["emailaddress1"]);