🗺️ AutoMapper Learning Center

AutoMapper is a popular object-to-object mapper for .NET that eliminates the need for writing tedious mapping code. It uses a convention-based approach to automatically map properties between objects with the same names.

Why use AutoMapper?

• Reduces boilerplate code
• Improves code maintainability
• Separates concerns (Domain Models vs DTOs)
• Simplifies complex object transformations
• Supports advanced mapping scenarios

Step 1: Install NuGet Package

dotnet add package AutoMapper.Extensions.Microsoft.DependencyInjection

Step 2: Register in Program.cs

builder.Services.AddAutoMapper(typeof(Program).Assembly);

Step 3: Create a Profile

public class UserProfile : Profile
{
    public UserProfile()
    {
        CreateMap<User, UserDTO>();
    }
}

Step 4: Inject and Use IMapper

public class MyController : Controller
{
    private readonly IMapper _mapper;
    
    public MyController(IMapper mapper)
    {
        _mapper = mapper;
    }
    
    public IActionResult Index()
    {
        var user = GetUser();
        var userDTO = _mapper.Map<UserDTO>(user);
        return View(userDTO);
    }
}