Is it possible to utilize ASP.NET Boilerplate instead of Entity Framework Core with Dapper?

Sure! you can use Dapper.

Installation

Before you start, you need to install https://www.nuget.org/packages/Abp.Dapper, either EF Core, EF 6.x or the NHibernate ORM NuGet packages in to the project you want to use.

Module Registration

First you need to add the DependsOn attribute for the AbpDapperModule on your module where you register it

[DependsOn(
     typeof(AbpEntityFrameworkCoreModule),
     typeof(AbpDapperModule)
)]
public class MyModule : AbpModule
{
    public override void Initialize()
    {
        IocManager.RegisterAssemblyByConvention(typeof(SampleApplicationModule).GetAssembly());
    }
}

Entity to Table Mapping

You can configure mappings. For example, the Person class maps to the Persons table in the following example:

public class PersonMapper : ClassMapper<Person>
{
    public PersonMapper()
    {
        Table("Persons");
        Map(x => x.Roles).Ignore();
        AutoMap();
    }
}

Sample Module:

[DependsOn(
     typeof(AbpEntityFrameworkModule),
     typeof(AbpDapperModule)
)]
public class MyModule : AbpModule
{
    public override void Initialize()
    {
        IocManager.RegisterAssemblyByConvention(typeof(SampleApplicationModule).GetAssembly());
        DapperExtensions.SetMappingAssemblies(new List<Assembly> { typeof(MyModule).GetAssembly() });
    }
}

Usage

After registering AbpDapperModule, you can use the Generic IDapperRepository interface (instead of standard IRepository) to inject dapper repositories.

public class SomeApplicationService : ITransientDependency
{
    private readonly IDapperRepository<Person> _personDapperRepository;
    private readonly IRepository<Person> _personRepository;

    public SomeApplicationService(
        IRepository<Person> personRepository,
        IDapperRepository<Person> personDapperRepository)
    {
        _personRepository = personRepository;
        _personDapperRepository = personDapperRepository;
    }

    public void DoSomeStuff()
    {
        var people = _personDapperRepository.Query("select * from Persons");
    }
}

Check out these links:

• https://aspnetboilerplate.com/Pages/Documents/Dapper-Integration
• https://github.com/aspnetboilerplate/aspnetboilerplate/pull/1854#issuecomment-284511423
• https://github.com/aspnetboilerplate/aspnetboilerplate/pull/1854#issuecomment-284639277
• Trying to set up a Dapper-based Data Access Layer. ABP.Dapper documentation is confusing and incomplete