Update Program.cs

update for dotnet core 3.1

Author: Longfld

Program.cs

@@ -1,43 +1,30 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
 using System.Threading.Tasks;
 using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.Hosting;
 using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.Hosting;
 using Microsoft.Extensions.Logging;
 using Serilog;
 
 namespace ASPNETCoreAngularJWT
 {
     public class Program
     {
-         public static void Main(string[] args)
+        public static void Main(string[] args)
         {
-            var webHost = new WebHostBuilder()
-                .UseKestrel()
-                .UseContentRoot(Directory.GetCurrentDirectory())
-                .ConfigureAppConfiguration((hostingContext, config) =>
-                {
-                    var env = hostingContext.HostingEnvironment;
-                    config.AddJsonFile("appsettings.json", optional: true, reloadOnChange: true)
-                          .AddJsonFile($"appsettings.{env.EnvironmentName}.json", optional: true, reloadOnChange: true);
-                    config.AddEnvironmentVariables();
-                    
-                    Log.Logger = new LoggerConfiguration().MinimumLevel.Error().WriteTo.RollingFile(Path.Combine(env.ContentRootPath,"logs/{Date}.txt")).CreateLogger();
-                })
-                .ConfigureLogging((hostingContext, logging) =>
-                {
-                    logging.AddConfiguration(hostingContext.Configuration.GetSection("Logging"));
-                    logging.AddSerilog(dispose: true);
-                    logging.AddConsole();
-                    logging.AddDebug();
-                })
-                .UseStartup<Startup>()
-                .Build();
-
-            webHost.Run();
+            CreateHostBuilder(args).Build().Run();
         }
+
+        public static IHostBuilder CreateHostBuilder(string[] args) =>
+          Host.CreateDefaultBuilder(args)
+              .ConfigureWebHostDefaults(webBuilder =>
+              {
+                  webBuilder.UseStartup<Startup>();
+              });
     }
+
 }