Fix .NET sample app

Author: justinyoo

complete/dotnet/Contoso.BlazorApp/Components/Pages/Home.razor

@@ -68,9 +68,9 @@
         }
     }
 
-    private async Task HandleAuthStateChanged()
+    private void HandleAuthStateChanged()
     {
-        await InvokeAsync(async () =>
+        InvokeAsync(async () =>
         {
             if (!AuthService.AuthState.IsLoading && !AuthService.AuthState.IsAuthenticated)
             {

complete/dotnet/Contoso.BlazorApp/Services/ApiService.cs

@@ -46,10 +46,12 @@ private string GetApiBaseUrl(string configuredBaseUrl)
             _logger.LogInformation("Using GitHub Codespaces URL: {CodespacesUrl}", codespacesUrl);
             return codespacesUrl;
         }
-        
+
         // Fall back to configured base URL (localhost)
-        _logger.LogInformation("Using configured base URL: {ConfiguredUrl}", configuredBaseUrl);
-        return configuredBaseUrl;
+        // Ensure the URL ends with a forward slash for proper relative path resolution
+        var normalizedUrl = configuredBaseUrl.TrimEnd('/') + "/";
+        _logger.LogInformation("Using configured base URL: {ConfiguredUrl}", normalizedUrl);
+        return normalizedUrl;
     }
 
     private void SetAuthHeaders()