From b5008f916396ce72545b87a0eb91953702a46aa4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Damian=20B=C3=BCchel?= <damian.buechel@let.ethz.ch>
Date: Tue, 28 Mar 2023 14:49:00 +0200
Subject: [PATCH] SEBWIN-670, #576: Fixed NullReferenceException when accessing
 CanNavigate properties of browser control.

---
 SafeExamBrowser.Browser/BrowserControl.cs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/SafeExamBrowser.Browser/BrowserControl.cs b/SafeExamBrowser.Browser/BrowserControl.cs
index 6a996a4b..f9a70ecd 100644
--- a/SafeExamBrowser.Browser/BrowserControl.cs
+++ b/SafeExamBrowser.Browser/BrowserControl.cs
@@ -28,8 +28,8 @@ namespace SafeExamBrowser.Browser
 		private readonly IRequestHandler requestHandler;
 
 		public string Address => control.Address;
-		public bool CanNavigateBackwards => control.BrowserCore.CanGoBack;
-		public bool CanNavigateForwards => control.BrowserCore.CanGoForward;
+		public bool CanNavigateBackwards => control.IsBrowserInitialized && control.BrowserCore.CanGoBack;
+		public bool CanNavigateForwards => control.IsBrowserInitialized && control.BrowserCore.CanGoForward;
 		public object EmbeddableControl => control;
 
 		public event AddressChangedEventHandler AddressChanged;