From 467303099cc5ebcb8e091c508d888d8c66e690c8 Mon Sep 17 00:00:00 2001
From: Steven Kirk <grokys@gmail.com>
Date: Tue, 13 Dec 2022 18:32:52 +0100
Subject: [PATCH] Fix SelectedItems indexer.

The index is an index into `Ranges`, not `Items`.

Fixes #7974.
---
 src/Avalonia.Controls/Selection/SelectedItems.cs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/Avalonia.Controls/Selection/SelectedItems.cs b/src/Avalonia.Controls/Selection/SelectedItems.cs
index 4fbcfde438..ef642b7bdc 100644
--- a/src/Avalonia.Controls/Selection/SelectedItems.cs
+++ b/src/Avalonia.Controls/Selection/SelectedItems.cs
@@ -35,9 +35,9 @@ namespace Avalonia.Controls.Selection
                 {
                     return _owner.SelectedItem;
                 }
-                else if (Items is object)
+                else if (Items is not null && Ranges is not null)
                 {
-                    return Items[index];
+                    return Items[IndexRange.GetAt(Ranges, index)];
                 }
                 else
                 {