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

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()
            .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(options =>
            options.UseSqlServer(Configuration.GetConnectionString("DefaultConnection")));

        services.AddIdentity()
            .AddEntityFrameworkStores()
            .AddDefaultTokenProviders();

        services.AddTransient();

        services.AddMvc();
    }

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