C# Auto-wire Classes for DI

MsDependencyExtension.cs

// This is an example of configuring Microsoft DI to auto-wire classes with the suffix, 'Actor'.
// Usage:
//  In your ASP.NET Core's Startup.cs method, ConfigureServices, add the following line
//    ``services.AddActors();``
//  The system will then scan for all classes which end with the name, 'Actor' and register
//  them as singletons.

public static class DependencyExtension
{
  /// <summary>Auto-wire state machine actors, directors, or coordinators.</summary>
  /// <param name="service">MS IOC service.</param>
  /// <param name="suffix">Suffix of the state machine type to register.</param>
  public static void AddActors(this IServiceCollection service, string suffix = "Actor")
  {
    var assembly = Assembly.GetExecutingAssembly();

    // search for supplied suffix, but not classes starting with 'I' for interface.
    var services = assembly.GetTypes().Where(type =>
      type.GetTypeInfo().IsClass &&
      type.Name.EndsWith(suffix) &&
      !type.Name.StartsWith("I") &&
      !type.GetTypeInfo().IsAbstract);

    foreach (var serviceType in services)
    {
      var allInterfaces = serviceType.GetInterfaces();
      var mainInterfaces = allInterfaces.Except(allInterfaces.SelectMany(t => t.GetInterfaces()));

      foreach (var iServiceType in mainInterfaces)
      {
        service.AddSingleton(iServiceType, serviceType);
      }
    }
  }
}