AspNetCore.Docs/aspnetcore/includes/RP/code/StartupDevProd.cs

using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Identity;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using RPauth.Data;

namespace RPauth
{
    #region snippet
    public class Startup
    {
        public Startup(IConfiguration configuration, IWebHostEnvironment env)
        {
            Environment = env;
            Configuration = configuration;
        }

        public IConfiguration Configuration { get; }
        public IWebHostEnvironment Environment { get; }

        public void ConfigureServices(IServiceCollection services)
        {
            if (Environment.IsDevelopment())
            {
                services.AddDbContext<RazorPagesMovieContext>(options =>
                options.UseSqlite(
                    Configuration.GetConnectionString("RazorPagesMovieContext")));
            }
            else
            {
                services.AddDbContext<RazorPagesMovieContext>(options =>
                options.UseSqlServer(
                    Configuration.GetConnectionString("MovieContext")));
            }

            services.AddRazorPages();
        }

        public void Configure(IApplicationBuilder app)
        {
            if (Environment.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
                app.UseDatabaseErrorPage();
            }
            else
            {
                app.UseExceptionHandler("/Error");
                app.UseHsts();
            }

            app.UseHttpsRedirection();
            app.UseStaticFiles();

            app.UseRouting();

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

}