TreeView.Collapsed Event
Definition
Important
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Occurs when a node in the tree is collapsed.
Equivalent WinUI 2 API for UWP: Microsoft.UI.Xaml.Controls.TreeView.Collapsed (for WinUI in the Windows App SDK, see the Windows App SDK namespaces).
// Register
event_token Collapsed(TypedEventHandler<TreeView, TreeViewCollapsedEventArgs const&> const& handler) const;
// Revoke with event_token
void Collapsed(event_token const* cookie) const;
// Revoke with event_revoker
TreeView::Collapsed_revoker Collapsed(auto_revoke_t, TypedEventHandler<TreeView, TreeViewCollapsedEventArgs const&> const& handler) const;public event TypedEventHandler<TreeView,TreeViewCollapsedEventArgs> Collapsed;function onCollapsed(eventArgs) { /* Your code */ }
treeView.addEventListener("collapsed", onCollapsed);
treeView.removeEventListener("collapsed", onCollapsed);
- or -
treeView.oncollapsed = onCollapsed;Public Custom Event Collapsed As TypedEventHandler(Of TreeView, TreeViewCollapsedEventArgs)