public void Configure(IApplicationBuilder app, IHostingEnvironment env, EfDbContext context, RoleManager <ApplicationRole> roleManager, UserManager <ApplicationUser> userManager) { if (env.IsDevelopment()) { app.UseExceptionHandler("/Account/Error"); app.UseDeveloperExceptionPage(); app.UseDatabaseErrorPage(); app.UseStaticFiles(); } else { app.UseExceptionHandler("/Account/Error"); app.UseStaticFiles(); app.UseHsts(); } app.UseHttpsRedirection(); app.UseStaticFiles(); app.UseCookiePolicy(); app.UseSession(); app.UseAuthentication(); app.UseMvc(routes => { routes.MapRoute( name: "default", template: "{controller=Home}/{action=MainPage}/{id?}"); }); AdminData.Initialize(context, userManager, roleManager).Wait(); ProductsData.Initialize(context).Wait(); }