Andy De George
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title, ms.date, dev_langs, helpviewer_keywords, ms.assetid
| title | ms.date | dev_langs | helpviewer_keywords | ms.assetid | |||
|---|---|---|---|---|---|---|---|
| How to: Improve the Performance of a TreeView | 03/30/2017 |
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b792c740-cf2b-4da8-8ba8-3d2e5a821874 |
How to: Improve the Performance of a TreeView
If a xref:System.Windows.Controls.TreeView contains many items, the amount of time it takes to load may cause a significant delay in the user interface. You can improve the load time by setting the VirtualizingStackPanel.IsVirtualizing attached property to true. The UI might also be slow to react when a user scrolls the xref:System.Windows.Controls.TreeView by using the mouse wheel or dragging the thumb of a scrollbar. You can improve the performance of the xref:System.Windows.Controls.TreeView when the user scrolls by setting the VirtualizingStackPanel.VirtualizationMode attached property to xref:System.Windows.Controls.VirtualizationMode.Recycling?displayProperty=nameWithType.
Example
Description
The following example creates a xref:System.Windows.Controls.TreeView that sets the VirtualizingStackPanel.IsVirtualizing attached property to true and the VirtualizingStackPanel.VirtualizationMode attached property to xref:System.Windows.Controls.VirtualizationMode.Recycling?displayProperty=nameWithType to optimize its performance.
Code
[!code-xamlRecycleItemContainerShippets#VirtualizingTreeView]
The following example shows the data that the previous example uses.
[!code-csharpRecycleItemContainerShippets#TreeViewData] [!code-vbRecycleItemContainerShippets#TreeViewData]