From 034f4721638b3052869ddc59cc53ecca10624650 Mon Sep 17 00:00:00 2001
From: Mihaela Stoica <mihaela.stoica@citrix.com>
Date: Mon, 13 Aug 2018 14:13:30 +0100
Subject: [PATCH] CA-286882: Check for page visibilty before calling HidePage

Signed-off-by: Mihaela Stoica <mihaela.stoica@citrix.com>
---
 XenAdmin/MainWindow.cs | 18 ++++++++++++------
 1 file changed, 12 insertions(+), 6 deletions(-)

diff --git a/XenAdmin/MainWindow.cs b/XenAdmin/MainWindow.cs
index d506618df..fb687c70a 100755
--- a/XenAdmin/MainWindow.cs
+++ b/XenAdmin/MainWindow.cs
@@ -3031,18 +3031,24 @@ namespace XenAdmin
             switch (submodeItem.SubMode)
             {
                 case NotificationsSubMode.Alerts:
+                    if (updatesPage.Visible)
+                        updatesPage.HidePage();
+                    if (eventsPage.Visible)
+                        eventsPage.HidePage();
                     alertPage.ShowPage();
-                    updatesPage.HidePage();
-                    eventsPage.HidePage();
                     break;
                 case NotificationsSubMode.Updates:
-                    alertPage.HidePage();
+                    if (alertPage.Visible)
+                        alertPage.HidePage();
+                    if (eventsPage.Visible)
+                        eventsPage.HidePage();
                     updatesPage.ShowPage();
-                    eventsPage.HidePage();
                     break;
                 case NotificationsSubMode.Events:
-                    alertPage.HidePage();
-                    updatesPage.HidePage();
+                    if (alertPage.Visible)
+                        alertPage.HidePage();
+                    if (updatesPage.Visible)
+                        updatesPage.HidePage();
                     eventsPage.ShowPage();
                     break;
             }