Don't try to dematerialize null containers.

10 years ago · 6cab63fb70
1 changed files with 1 additions and 1 deletions
--- a/src/Avalonia.Controls/Generators/ItemContainerGenerator.cs
+++ b/src/Avalonia.Controls/Generators/ItemContainerGenerator.cs
@ -73,7 +73,7 @@ namespace Avalonia.Controls.Generators

            for (int i = startingIndex; i < startingIndex + count; ++i)
            {
-                if (i < _containers.Count)
+                if (i < _containers.Count &&_containers[i] != null)
                {
                    result.Add(_containers[i]);
                    _containers[i] = null;