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Preserve Selected Content
Updated on Mar 26, 2026
The TabControl comes with a built-in memory optimization where only the content of the selected tab is loaded in the visual tree.
Selecting a new tab loads its content and the content of the previous selection is unloaded. To disable this behavior and keep the content of the previously selected tab, set the IsContentPreserved property of RadTabControl to true.
XAML
<telerik:RadTabControl IsContentPreserved="True" />