Startup.cs

        // This method gets called by the runtime. Use this method to add services to the container.
        public void ConfigureServices(IServiceCollection services)
        {
            services.AddDbContext<DataContext>(x => x.UseSqlServer(Configuration.GetConnectionString("DefaultConnection")));
            services.AddControllers()
                .AddNewtonsoftJson();
            services.AddScoped<IAuthRepository, AuthRepository>();
        }