Update SelectedIndex when item added before selection.

Fixes #2574.
7 years ago · 6926f605f5
1 changed files with 4 additions and 0 deletions
--- a/src/Avalonia.Controls/Primitives/SelectingItemsControl.cs
+++ b/src/Avalonia.Controls/Primitives/SelectingItemsControl.cs
@ -307,6 +307,10 @@ namespace Avalonia.Controls.Primitives
                    {
                        SelectedIndex = 0;
                    }
+                    else if (e.NewStartingIndex <= SelectedIndex)
+                    {
+                        UpdateSelectedItem(SelectedIndex + e.NewItems.Count, false);
+                    }

                    break;