public void ConfigureServices(IServiceCollection services)

        {

            services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_1);

            services.AddMvc().AddJsonOptions(options =>

                options.SerializerSettings.ContractResolver =

                    new Newtonsoft.Json.Serialization.DefaultContractResolver());

            services.AddSwaggerGen();

            services.ConfigureSwaggerGen(options =>

            {

                options.SwaggerDoc("v1", new Info

                {

                    Version = "v1",

                    Title = "MsSystem API"

                });

                options.IncludeXmlComments(Path.Combine(".\\bin\\netcoreapp2.1\\", "ApiDemo.xml"));

                options.DescribeAllEnumsAsStrings();

            });

        }

        public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)

        {

            loggerFactory.AddConsole(Configuration.GetSection("Logging"));

            loggerFactory.AddDebug();

            if (env.IsDevelopment())

            {

                app.UseDeveloperExceptionPage();

            }

            else

            {

                app.UseHsts();

            }

            app.UseHttpsRedirection();

            //app.UseMvc();

            app.UseMvc(routes =>

            {

                routes.MapRoute(

                    name: "areas",

                    template: "{area:exists}/{controller=Home}/{action=Index}/{id?}"

                );

            });

            app.UseSwagger();

            app.UseSwaggerUI(c =>

            {

                c.SwaggerEndpoint("/swagger/v1/swagger.json", "MsSystem API V1");

            });

        }