Make sure identity templates do not run code after navigation

src/ProjectTemplates/Web.ProjectTemplates/content/BlazorWeb-CSharp/BlazorWeb-CSharp/Components/Account/Pages/ExternalLogin.razor

@@ -72,12 +72,14 @@
         if (RemoteError is not null)
         {
             RedirectManager.RedirectToWithStatus("Account/Login", $"Error from external provider: {RemoteError}", HttpContext);
+            return;
         }
 
         var info = await SignInManager.GetExternalLoginInfoAsync();
         if (info is null)
         {
             RedirectManager.RedirectToWithStatus("Account/Login", "Error loading external login information.", HttpContext);
+            return;
         }
 
         externalLoginInfo = info;
@@ -118,6 +120,7 @@
                 externalLoginInfo.Principal.Identity?.Name,
                 externalLoginInfo.LoginProvider);
             RedirectManager.RedirectTo(ReturnUrl);
+            return;
         }
         else if (result.IsLockedOut)
         {
@@ -168,13 +171,17 @@
                 {
                     RedirectManager.RedirectTo("Account/RegisterConfirmation", new() { ["email"] = Input.Email });
                 }
-
-                await SignInManager.SignInAsync(user, isPersistent: false, externalLoginInfo.LoginProvider);
-                RedirectManager.RedirectTo(ReturnUrl);
+                else
+                {
+                    await SignInManager.SignInAsync(user, isPersistent: false, externalLoginInfo.LoginProvider);
+                    RedirectManager.RedirectTo(ReturnUrl);
+                }
             }
         }
-
-        message = $"Error: {string.Join(",", result.Errors.Select(error => error.Description))}";
+        else
+        {
+            message = $"Error: {string.Join(",", result.Errors.Select(error => error.Description))}";
+        }
     }
 
     private ApplicationUser CreateUser()

src/ProjectTemplates/Web.ProjectTemplates/content/BlazorWeb-CSharp/BlazorWeb-CSharp/Components/Account/Pages/Manage/ExternalLogins.razor

@@ -123,9 +123,11 @@
         {
             RedirectManager.RedirectToCurrentPageWithStatus("Error: The external login was not removed.", HttpContext);
         }
-
-        await SignInManager.RefreshSignInAsync(user);
-        RedirectManager.RedirectToCurrentPageWithStatus("The external login was removed.", HttpContext);
+        else
+        {
+            await SignInManager.RefreshSignInAsync(user);
+            RedirectManager.RedirectToCurrentPageWithStatus("The external login was removed.", HttpContext);
+        }
     }
 
     private async Task OnGetLinkLoginCallbackAsync()
@@ -145,14 +147,16 @@
         }
 
         var result = await UserManager.AddLoginAsync(user, info);
-        if (!result.Succeeded)
+        if (result.Succeeded)
+        {
+            // Clear the existing external cookie to ensure a clean login process
+            await HttpContext.SignOutAsync(IdentityConstants.ExternalScheme);
+
+            RedirectManager.RedirectToCurrentPageWithStatus("The external login was added.", HttpContext);
+        }
+        else
         {
             RedirectManager.RedirectToCurrentPageWithStatus("Error: The external login was not added. External logins can only be associated with one account.", HttpContext);
         }
-
-        // Clear the existing external cookie to ensure a clean login process
-        await HttpContext.SignOutAsync(IdentityConstants.ExternalScheme);
-
-        RedirectManager.RedirectToCurrentPageWithStatus("The external login was added.", HttpContext);
     }
 }

src/ProjectTemplates/Web.ProjectTemplates/content/BlazorWeb-CSharp/BlazorWeb-CSharp/Components/Account/Pages/Manage/Index.razor

@@ -72,6 +72,7 @@
             if (!setPhoneResult.Succeeded)
             {
                 RedirectManager.RedirectToCurrentPageWithStatus("Error: Failed to set phone number.", HttpContext);
+                return;
             }
         }
 

src/ProjectTemplates/Web.ProjectTemplates/content/BlazorWeb-CSharp/BlazorWeb-CSharp/Components/Account/Pages/Manage/PersonalData.razor

@@ -37,7 +37,6 @@
         if (user is null)
         {
             RedirectManager.RedirectToInvalidUser(UserManager, HttpContext);
-            return;
         }
     }
 }

src/ProjectTemplates/Web.ProjectTemplates/content/BlazorWeb-CSharp/BlazorWeb-CSharp/Components/Account/Pages/Register.razor

@@ -97,9 +97,11 @@
                 "Account/RegisterConfirmation",
                 new() { ["email"] = Input.Email, ["returnUrl"] = ReturnUrl });
         }
-
-        await SignInManager.SignInAsync(user, isPersistent: false);
-        RedirectManager.RedirectTo(ReturnUrl);
+        else
+        {
+            await SignInManager.SignInAsync(user, isPersistent: false);
+            RedirectManager.RedirectTo(ReturnUrl);
+        }
     }
 
     private ApplicationUser CreateUser()

src/ProjectTemplates/Web.ProjectTemplates/content/BlazorWeb-CSharp/BlazorWeb-CSharp/Components/Account/Pages/ResetPassword.razor

@@ -78,6 +78,7 @@
         if (result.Succeeded)
         {
             RedirectManager.RedirectTo("Account/ResetPasswordConfirmation");
+            return;
         }
 
         identityErrors = result.Errors;