From 79ecf98a46850d4378214cd205af29d195ebc416 Mon Sep 17 00:00:00 2001
From: Dan Walmsley <dan@walms.co.uk>
Date: Wed, 11 Sep 2019 13:50:08 +0100
Subject: [PATCH] add null check to itemvirtualizer simple

---
 .../Presenters/ItemVirtualizerSimple.cs               | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/src/Avalonia.Controls/Presenters/ItemVirtualizerSimple.cs b/src/Avalonia.Controls/Presenters/ItemVirtualizerSimple.cs
index b8b8094582..0fcd32ba23 100644
--- a/src/Avalonia.Controls/Presenters/ItemVirtualizerSimple.cs
+++ b/src/Avalonia.Controls/Presenters/ItemVirtualizerSimple.cs
@@ -295,11 +295,14 @@ namespace Avalonia.Controls.Presenters
         /// <inheritdoc/>
         public override void ScrollIntoView(object item)
         {
-            var index = Items.IndexOf(item);
-
-            if (index != -1)
+            if(Items != null)
             {
-                ScrollIntoView(index);
+                var index = Items.IndexOf(item);
+
+                if (index != -1)
+                {
+                    ScrollIntoView(index);
+                }
             }
         }