Startup class

Startup.cs

public class Startup
{
    // Use this method to add services to the container.
    public void ConfigureServices(IServiceCollection services)
    {
        services.AddSingleton<IDependecy, Dependency>()
                .AddScoped<UserManager<AppUser>>()
                .AddTransient<IUserClaimsPrincipalFactory<AppUser>, AppUserClaimsPrincipalFactory>();
    }

    // Use this method to configure the HTTP request pipeline.
    public void Configure(IApplicationBuilder app)
    {
        if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }

            app.UseHsts(option => option.MaxAge(days: 10)) // Using http strict transport security protocol.
               .UseCsp(option => option.DefaultSources(source => source.Self())) // Using content security protocol for anti xss.
               .UseXfo(option => option.Deny()) // Denying X-Frames to run on the site to prevent click-jacking.
               .UseStaticFiles()
               .UseStatusCodePages()
               .UseAuthentication()
               .UseMvc(route => route.MapRoute(name: "default", template: "{Controller=HomeController}/{Action=Index}/{id?}"));
    }
}