Startup.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.HttpsPolicy;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;
using Microsoft.Extensions.Options;
using Microsoft.EntityFrameworkCore;
using Catalog.Models;
using Microsoft.Net.Http.Headers;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Diagnostics;

namespace catalog
{
    public class Startup
    {
        public Startup(IConfiguration configuration)
        {
            Configuration = configuration;
        }

        public IConfiguration Configuration { get; }

        // This method gets called by the runtime. Use this method to add services to the container.
        public void ConfigureServices(IServiceCollection services)
        {
            services.AddDbContext<CatalogContext>(opt => 
                opt.UseInMemoryDatabase("CatalogList"));
            services.AddMvc()
                .SetCompatibilityVersion(CompatibilityVersion.Version_2_1);
            
            services.Configure<ApiBehaviorOptions>(options =>
            {
                options.SuppressConsumesConstraintForFormFileParameters = true;                
            });                        
        }

        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public void Configure(IApplicationBuilder app, IHostingEnvironment env)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }
            else
            {
                app.UseExceptionHandler("/error");
                app.UseHsts();
            }

            app.Use(async (httpContext, next) =>
            {
                httpContext.Response.Headers[HeaderNames.CacheControl] = "no-cache";
                await next();
            });

            //app.UseHttpsRedirection();
            app.UseDefaultFiles();
            app.UseStaticFiles();
            app.UseMvc();
            app.UseStatusCodePages(async context =>
            {
                context.HttpContext.Response.ContentType = "text/plain";

                await context.HttpContext.Response.WriteAsync(
                    "Status code page, status code: " + 
                    context.HttpContext.Response.StatusCode);
            });

            app.UseMvc();            
        }
    }
}