Auth added to blazor

Web/Pages/Logout.cshtml.cs

@@ -0,0 +1,16 @@
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Authentication;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Mvc.RazorPages;
+
+namespace Web.Pages
+{
+    public class Logout : PageModel
+    {
+        public async Task<IActionResult> OnGet()
+        {
+            await HttpContext.SignOutAsync();
+            return Redirect("/");
+        }
+    }
+}