Writing IServiceCollection

IServiceCollection is an interface from the DependencyInjection namespace. We are going to use IServiceCollection for our dependency injection.

And finally, there is a dependency injection for the Travel.Application project. Create a C# file in the root folder of the Travel.Application project:

// DependencyInjection.cs

…
namespace Travel.Application
{
  public static class DependencyInjection
  {
    public static IServiceCollection AddApplication(this
     IServiceCollection services)
    {
      services.AddAutoMapper
        (Assembly.GetExecutingAssembly());
      services.AddValidatorsFromAssembly
        (Assembly.GetExecutingAssembly());
      services.AddMediatR(Assembly.GetExecutingAssembly...