AutoMapper with prefix | 易学教程

问题

I'm trying to use Automapper to map to objects, the issue is one of the objects I'm trying to map has a prefix 'Cust_' in front of all its properties and one doesn't. Is there a way to make this mapping.

For example say I have

class A
{
      String FirstName { get; set; }
      String LastName { get; set; }
}

class B
{
      String Cust_FirstName { get; set; }
      String Cust_LastName { get; set; }
}

Obviously this map won't work

AutoMapper.Mapper.CreateMap<A, B>();
b = AutoMapper.Mapper.Map<A, B>(a);

回答1:

Mapper.Initialize(cfg =>
{
   cfg.RecognizeDestinationPrefixes("Cust_");
   cfg.CreateMap<A, B>();
});

A a = new A() {FirstName = "Cliff", LastName = "Mayson"};
B b = Mapper.Map<A, B>(a);

//b.Cust_FirstName is "Cliff"
//b.Cust_LastName is "Mayson"

Or alternatively:

Mapper.Configuration.RecognizeDestinationPrefixes("Cust_");
Mapper.CreateMap<A, B>();
...
B b = Mapper.Map<A, B>(a);
...

回答2:

The documentation has an article on Recognizing pre/postfixes

Sometimes your source/destination properties will have common pre/postfixes that cause you to have to do a bunch of custom member mappings because the names don't match up. To address this, you can recognize pre/postfixes:

public class Source {
    public int frmValue { get; set; }
    public int frmValue2 { get; set; }
}
public class Dest {
    public int Value { get; set; }
    public int Value2 { get; set; }
}
Mapper.Initialize(cfg => {
    cfg.RecognizePrefix("frm");
    cfg.CreateMap<Source, Dest>();
});

Mapper.AssertConfigurationIsValid(); By default AutoMapper recognizes the prefix "Get", if you need to clear the prefix:

Mapper.Initialize(cfg => {
    cfg.ClearPrefixes();
    cfg.RecognizePrefixes("tmp");
});

来源：https://stackoverflow.com/questions/9321487/automapper-with-prefix

标签

automapper