No service for type 'Microsoft.AspNetCore.Mvc.ViewFeatures.ITempDataDictionaryFactory' has been registered

Question

I\'m having this problem: No service for type \'Microsoft.AspNetCore.Mvc.ViewFeatures.ITempDataDictionaryFactory\' has been registered. In asp.net core 1.0,

Answer 1

Solution: Use services.AddMvcCore(options => options.EnableEndpointRouting = false).AddRazorViewEngine(); in Startup.cs and it will work.

This code is tested for asp.net core 3.1 (MVC)

Answer 2

In .NET Core 3.1, I had to add the following:

services.AddRazorPages();

in ConfigureServices()

And the below in Configure() in Startup.cs

app.UseEndpoints(endpoints =>
{
     endpoints.MapRazorPages();
}

Answer 3

If you're using 2.x then use services.AddMvcCore().AddRazorViewEngine(); in your ConfigureServices

Also remember to add .AddAuthorization() if you're using Authorize attribute, otherwise it won't work.

Update: for 3.1 onwards use services.AddControllersWithViews();

Answer 4

Solution: Use AddMvc() instead of AddMvcCore() in Startup.cs and it will work.

Please see this issue for further information about why:

For most users there will be no change, and you should continue to use AddMvc() and UseMvc(...) in your startup code.

For the truly brave, there's now a configuration experience where you can start with a minimal MVC pipeline and add features to get a customized framework.

https://github.com/aspnet/Mvc/issues/2872

You might also have to add a reference toMicrosoft.AspNetCore.Mvc.ViewFeature in project.json

https://www.nuget.org/packages/Microsoft.AspNetCore.Mvc.ViewFeatures/

Answer 5

For those that get this issue during .NetCore 1.X -> 2.0 upgrade, update both your Program.cs and Startup.cs

public class Program
{
    public static void Main(string[] args)
    {
        BuildWebHost(args).Run();
    }

    public static IWebHost BuildWebHost(string[] args) =>
        WebHost.CreateDefaultBuilder(args)
            .UseStartup<Startup>()
            .Build();
}

public class Startup
{
// The appsettings.json settings that get passed in as Configuration depends on 
// project properties->Debug-->Enviroment Variables-->ASPNETCORE_ENVIRONMENT
    public Startup(IConfiguration configuration)
    {
        Configuration = configuration;
    }

    public IConfiguration Configuration { get; }

    public void ConfigureServices(IServiceCollection services)
    {
        services.AddDbContext<ApplicationDbContext>(options =>
            options.UseSqlServer(Configuration.GetConnectionString("DefaultConnection")));

        services.AddIdentity<ApplicationUser, IdentityRole>()
            .AddEntityFrameworkStores<ApplicationDbContext>()
            .AddDefaultTokenProviders();

        services.AddTransient<IEmailSender, EmailSender>();

        services.AddMvc();
    }

    public void Configure(IApplicationBuilder app, IHostingEnvironment env)
    {
    // no change to this method leave yours how it is
    }
}