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Merge pull request #5858 from Afanyiyu/treeview-bugfix
fix: Fix ArgumentNullException in TreeView.ExpandSubTree()
pull/6212/head
Max Katz
5 years ago
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GitHub
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1 changed files with
2 additions and
4 deletions
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src/Avalonia.Controls/TreeView.cs
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@ -166,11 +166,9 @@ namespace Avalonia.Controls |
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{ |
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item.IsExpanded = true; |
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var panel = item.Presenter.Panel; |
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if (panel != null) |
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if (item.Presenter?.Panel != null) |
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{ |
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foreach (var child in panel.Children) |
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foreach (var child in item.Presenter.Panel.Children) |
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{ |
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if (child is TreeViewItem treeViewItem) |
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{ |
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