Setting eingebaut um umschalten zu können, ob Registrieren erlaubt ist

FWLAZ_Web/AppSettings.cs

@@ -0,0 +1,7 @@
+namespace FWLAZ_Web
+{
+    public class AppSettings
+    {
+        public bool RegistrationEnabled { get; set; }
+    }
+}

FWLAZ_Web/Components/Account/Pages/Login.razor

@@ -4,11 +4,13 @@
 @using Microsoft.AspNetCore.Authentication
 @using Microsoft.AspNetCore.Identity
 @using FWLAZ_Web.Data
+@using Microsoft.Extensions.Options
 
 @inject SignInManager<IdentityUser> SignInManager
 @inject ILogger<Login> Logger
 @inject NavigationManager NavigationManager
 @inject IdentityRedirectManager RedirectManager
+@inject IOptions<AppSettings> Config;
 
 <PageTitle>Log in</PageTitle>
 
@@ -45,9 +47,12 @@
                     <p>
                         <a href="Account/ForgotPassword">Forgot your password?</a>
                     </p>
-                    <p>
-                        <a href="@(NavigationManager.GetUriWithQueryParameters("Account/Register", new Dictionary<string, object?> { ["ReturnUrl"] = ReturnUrl }))">Register as a new user</a>
-                    </p>
+                    @if (Config.Value.RegistrationEnabled)
+                    {
+                        <p>
+                            <a href="@(NavigationManager.GetUriWithQueryParameters("Account/Register", new Dictionary<string, object?> { ["ReturnUrl"] = ReturnUrl }))">Register as a new user</a>
+                        </p>
+                    }
                     <p>
                         <a href="Account/ResendEmailConfirmation">Resend email confirmation</a>
                     </p>

FWLAZ_Web/Components/Account/Pages/Register.razor

@@ -6,6 +6,7 @@
 @using Microsoft.AspNetCore.Identity
 @using Microsoft.AspNetCore.WebUtilities
 @using FWLAZ_Web.Data
+@using Microsoft.Extensions.Options
 
 @inject UserManager<IdentityUser> UserManager
 @inject IUserStore<IdentityUser> UserStore
@@ -14,9 +15,17 @@
 @inject ILogger<Register> Logger
 @inject NavigationManager NavigationManager
 @inject IdentityRedirectManager RedirectManager
+@inject IOptions<AppSettings> Config;
+
 
 <PageTitle>Register</PageTitle>
 
+@if (!Config.Value.RegistrationEnabled)
+{
+    RedirectManager.RedirectTo("/");
+}
+
+
 <h1>Register</h1>
 
 <div class="row">

FWLAZ_Web/Program.cs

@@ -6,9 +6,13 @@ using FWLAZ_Web.Objects;
 using FWLAZ_Web.Components.Account;
 using Microsoft.AspNetCore.Components.Authorization;
 using Microsoft.AspNetCore.Identity;
+using FWLAZ_Web;
 
 var builder = WebApplication.CreateBuilder(args);
+
+// AppSettings auslesen
 var connectionstring = builder.Configuration.GetConnectionString("QuizDB");
+builder.Services.Configure<AppSettings>(builder.Configuration.GetSection(nameof(AppSettings)));
 
 // Add services to the container.
 builder.Services.AddRazorComponents()

FWLAZ_Web/appsettings.json

@@ -8,5 +8,8 @@
   "ConnectionStrings": {
     "QuizDB": "Data Source=Data/quiz.db"
   },
+  "AppSettings": {
+    "RegistrationEnabled": true
+  },
   "AllowedHosts": "*"
 }