EF 6 & EF Core

EF 6 & EF Core support

For EF 6

PM> Install-Package Mapster.EF6

For EF Core

PM> Install-Package Mapster.EFCore

In EF, objects are tracked, when you copy data from dto to entity containing navigation properties, this plugin will help finding entity object in navigation properties automatically.

Usage

Use EntityFromContext method to define data context.

var poco = db.DomainPoco.Include("Children")
    .Where(item => item.Id == dto.Id).FirstOrDefault();

dto.BuildAdapter()
    .EntityFromContext(db)
    .AdaptTo(poco);

Or like this, if you use mapper instance

_mapper.From(dto)
    .EntityFromContext(db)
    .AdaptTo(poco);

EF Core ProjectToType

Mapster.EFCore also allows ProjectToType from mapper instance.

var query = db.Customers.Where(...);
_mapper.From(query)
    .ProjectToType<Dto>();