AutoMapper Auto Profile Configuration

The Scene

I've been using AutoMapper for a while now, about 8 months ago I progressed to using the `Profile` classes to define Mappings. Now I'm just about to go and create these profiles - all over the place - in an old project and don't want to have to be remembering all the profiles I created.

The last thing I wanted to do is have to list all the profiles that I have and add them to the `Mapper.Configuration` manually. Well, you know, Auto is in the name.

Initial Crack

So my initial crack at this is:

// Get all types in the current assembly
var types = typeof(Program).Assembly.GetTypes();

// IsSubclassOf will make sure that we using class deriving Profile
// Activator.CreateInstance will instantiate the profile
// OfType<Profile>() will cast the types
var automapperProfiles = types
                            .Where(x => x.IsSubclassOf(typeof(Profile)))
                            .Select(Activator.CreateInstance)
                            .OfType<Profile>()
                            .ToList();

// Here we call the static Mapper class and add each profile
automapperProfiles.ForEach(Mapper.Configuration.AddProfile);

It works a treat.

AutoMapper Extension

So now I've factored it out into an extension class:

/// <summary>
/// The auto mapper extensions.
/// </summary>
public static class AutoMapperExtensions
{
    /// <summary>
    /// The register configurations.
    /// </summary>
    /// <param name="types">
    /// The types.
    /// </param>
    public static void RegisterConfigurations(this Type[] types)
    {
        var automapperProfiles = types
                                    .Where(x => x.IsSubclassOf(typeof(Profile)))
                                    .Select(Activator.CreateInstance)
                                    .OfType<Profile>()
                                    .ToList();

        automapperProfiles.ForEach(Mapper.Configuration.AddProfile);
    }
}

Conclusion

Pretty straightforward but IMHO very powerful! Another one of coding's little helpers to make life considerably easier.