AutoMapper using Notes

AutoMapper is a. NET object mapping tool.

Project address: Https://github.com/AutoMapper/AutoMapper.

Help Document: Https://github.com/AutoMapper/AutoMapper/wiki

Main purpose

The transformation between the domain object and the DTO, and the database query results are mapped to the entity object.

Using notes

Scenario 1: Source type Blogentry, target type blogpostdto, specified attribute is mapped (blogentry.id corresponds to Blogpostdto.postid).

Code:

Automapper.mapper.createmap<blogentry, Blogpostdto> ()
                . Formember (dto = dto). PostID, opt = opt. Mapfrom (entity = entity.id));

Scene 2:idatareader mapping to entity classes

Code:

using (IDataReader reader = _db. ExecuteReader (command))
{
    if (reader. Read ())
    {
        return automapper.mapper.dynamicmap<blogconfig> (reader);
    }
}

Scenario 3: Mapping between list types such as: source type list<blogsite>, Target type list<blogsitedto>

The code is as follows:

Automapper.mapper.createmap<blogsite, blogsitedto> ();
var blogsitedto = Automapper.mapper.map<list<blogsite>, list<blogsitedto>> (BlogSite);

Note: The mapping relationship between Blogsite and Blogsitedto must first be established through Createmap.

Scenario 4: Specify values for the properties of the target instance at map time

The code is as follows:

var blogsitedto = new Blogsitedto ();
Automapper.mapper.createmap<blogentry, Blogpostdto> ()
                . Formember (dto = dto). Blogsitedto, opt = opt. Usevalue (blogsitedto));

Note: Blogsitedto is a property of Blogpostdto.

Add:

AutoMapper configuration (such as Automapper.mapper.createmap<blogsite, blogsitedto> ();) is recommended when the program starts, such as Global.asax application _start, BootStrapper.

AutoMapper using Notes