Expander.Expanding Event

  • Reference

Definition

Namespace:
Microsoft.UI.Xaml.Controls
Edit

Occurs when the content area of the Expander starts to be shown.

This documentation applies to WinUI 2 for UWP (for WinUI in the Windows App SDK, see the Windows App SDK namespaces).

/// [Windows.Foundation.Metadata.Experimental]
/// [add: Windows.Foundation.Metadata.Experimental]
/// [remove: Windows.Foundation.Metadata.Experimental]
// Register
event_token Expanding(TypedEventHandler<Expander, ExpanderExpandingEventArgs const&> const& handler) const;

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

// Revoke with event_revoker
Expander::Expanding_revoker Expanding(auto_revoke_t, TypedEventHandler<Expander, ExpanderExpandingEventArgs const&> const& handler) const;
// Register
event_token Expanding(TypedEventHandler<Expander, ExpanderExpandingEventArgs const&> const& handler) const;

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

// Revoke with event_revoker
Expander::Expanding_revoker Expanding(auto_revoke_t, TypedEventHandler<Expander, ExpanderExpandingEventArgs const&> const& handler) const;
[Windows.Foundation.Metadata.Experimental]
[add: Windows.Foundation.Metadata.Experimental]
[remove: Windows.Foundation.Metadata.Experimental]
public event TypedEventHandler<Expander,ExpanderExpandingEventArgs> Expanding;
public event TypedEventHandler<Expander,ExpanderExpandingEventArgs> Expanding;
Public Custom Event Expanding As TypedEventHandler(Of Expander, ExpanderExpandingEventArgs)

Event Type

TypedEventHandler<Expander,ExpanderExpandingEventArgs>
Attributes
ExperimentalAttribute

Applies to