User more modern ASP.NET in Demo (#612)

* Clean up asp.net hosting

* use main as branhc

* Move to Helper folder

* Use file-based using statement

* Use Collection Expressions

Author: abergs

Demo/ConformanceTestController.cs

@@ -40,7 +40,7 @@ public OkObjectResult MakeCredentialOptionsTest([FromBody] TEST_MakeCredentialPa
     {
         var attType = opts.Attestation;
 
-        var username = Array.Empty<byte>();
+        byte[] username = [];
 
         try
         {

Demo/ConformanceTesting.cs

@@ -16,11 +16,10 @@ public static IMetadataService MetadataServiceInstance(string cacheDir, string o
             {
                 if (_instance == null)
                 {
-                    var repos = new List<IMetadataRepository>
-                    {
+                    List<IMetadataRepository> repos = [
                         new ConformanceMetadataRepository(null, origin),
                         new FileSystemMetadataRepository(cacheDir)
-                    };
+                    ];
                     var simpleService = new ConformanceMetadataService(repos);
                     simpleService.InitializeAsync().Wait();
                     _instance = simpleService;

Demo/DemoController.cs

@@ -144,7 +144,7 @@ public ActionResult AssertionOptionsPost([FromForm] string username, [FromForm]
     {
         try
         {
-            var existingCredentials = new List<PublicKeyCredentialDescriptor>();
+            List<PublicKeyCredentialDescriptor> existingCredentials = [];
 
             if (!string.IsNullOrEmpty(username))
             {

Demo/RouteHelperExtensions.cs renamed to Demo/Helpers/RouteHelperExtensions.cs

@@ -6,6 +6,6 @@ public static class UrlHelperExtensions
 {
     public static string ToGithub(this IUrlHelper url, string path)
     {
-        return "https://github.com/passwordless-lib/fido2-net-lib/blob/master/" + path;
+        return "https://github.com/passwordless-lib/fido2-net-lib/blob/main/" + path;
     }
 }

Demo/UrlHelperExtensions.cs renamed to Demo/Helpers/UrlHelperExtensions.cs

@@ -1,11 +1,10 @@
 using Microsoft.AspNetCore.Mvc.RazorPages;
 
-namespace Fido2Demo.Pages
+namespace Fido2Demo.Pages;
+
+public class _optionsModel : PageModel
 {
-    public class _optionsModel : PageModel
+    public void OnGet()
     {
-        public void OnGet()
-        {
-        }
     }
 }

Demo/Pages/_options.cshtml.cs

@@ -1,11 +1,10 @@
 using Microsoft.AspNetCore.Mvc.RazorPages;
 
-namespace Fido2Demo
+namespace Fido2Demo;
+
+public class CustomModel : PageModel
 {
-    public class CustomModel : PageModel
+    public void OnGet()
     {
-        public void OnGet()
-        {
-        }
     }
 }

Demo/Pages/custom.cshtml.cs

@@ -1,14 +1,13 @@
 using Microsoft.AspNetCore.Mvc.RazorPages;
 
-namespace Fido2Demo.Pages
+namespace Fido2Demo.Pages;
+
+public class dashboardModel : PageModel
 {
-    public class dashboardModel : PageModel
+    public void OnGet(string username)
     {
-        public void OnGet(string username)
-        {
-            this.Username = username;
-        }
-
-        public string Username { get; set; }
+        this.Username = username;
     }
+
+    public string Username { get; set; }
 }

Demo/Pages/dashboard.cshtml.cs

@@ -1,15 +1,14 @@
 using Microsoft.AspNetCore.Mvc.RazorPages;
 
-namespace Fido2Demo
+namespace Fido2Demo;
+
+public class MfaModel : PageModel
 {
-    public class MfaModel : PageModel
+    public void OnGet()
     {
-        public void OnGet()
-        {
-        }
+    }
 
-        public void OnPost()
-        {
-        }
+    public void OnPost()
+    {
     }
 }

Demo/Pages/mfa.cshtml.cs

@@ -1,11 +1,10 @@
 using Microsoft.AspNetCore.Mvc.RazorPages;
 
-namespace Fido2Demo
+namespace Fido2Demo;
+
+public class OverviewModel : PageModel
 {
-    public class OverviewModel : PageModel
+    public void OnGet()
     {
-        public void OnGet()
-        {
-        }
     }
 }