TreeView.Expanding Ereignis

  • Referenz

Definition

Namespace:
Windows.UI.Xaml.Controls
Bearbeiten

Tritt auf, wenn ein Knoten in der Struktur erweitert wird.

Entsprechende WinUI 2-API für UWP: Microsoft.UI.Xaml.Controls.TreeView.Expanding (informationen zu WinUI im Windows App SDK finden Sie in den Windows App SDK Namespaces).

// Register
event_token Expanding(TypedEventHandler<TreeView, TreeViewExpandingEventArgs const&> const& handler) const;

// Revoke with event_token
void Expanding(event_token const* cookie) const;

// Revoke with event_revoker
TreeView::Expanding_revoker Expanding(auto_revoke_t, TypedEventHandler<TreeView, TreeViewExpandingEventArgs const&> const& handler) const;
public event TypedEventHandler<TreeView,TreeViewExpandingEventArgs> Expanding;
function onExpanding(eventArgs) { /* Your code */ }
treeView.addEventListener("expanding", onExpanding);
treeView.removeEventListener("expanding", onExpanding);
- or -
treeView.onexpanding = onExpanding;
Public Custom Event Expanding As TypedEventHandler(Of TreeView, TreeViewExpandingEventArgs)

Ereignistyp

TypedEventHandler<TreeView,TreeViewExpandingEventArgs>

Gilt für: