Startup.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNet.OData.Builder;
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 ODataService.Models;
using Microsoft.AspNet.OData.Extensions;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNet.OData.Extensions;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;

namespace ODataService
{
    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.AddMvc(options =>
            {
                // https://blogs.msdn.microsoft.com/webdev/2018/08/27/asp-net-core-2-2-0-preview1-endpoint-routing/
                // Because conflicts with ODataRouting as of this version
                // could improve performance though
                options.EnableEndpointRouting = false;
            }).SetCompatibilityVersion(CompatibilityVersion.Version_2_2);
            services.AddOData();
        }

        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public void Configure(IApplicationBuilder app, IHostingEnvironment env)
        {
            var builder = new ODataConventionModelBuilder(app.ApplicationServices);

            builder.EntitySet<Product>("Products");


            //if (env.IsDevelopment())
            //{
            //    app.UseDeveloperExceptionPage();
            //}
            //else
            //{
            //    // The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
            //    app.UseHsts();
            //}

            app.UseHttpsRedirection();
            app.UseMvc(routeBuilder =>
            {
                // and this line to enable OData query option, for example $filter
                routeBuilder.Select().Expand().Filter().OrderBy().MaxTop(100).Count();

                routeBuilder.MapODataServiceRoute("ODataRoute", "odata", builder.GetEdmModel());

                // uncomment the following line to Work-around for #1175 in beta1
                //routeBuilder.EnableDependencyInjection();
            });
            //app.UseMvc(); // Original
        }
    }
}