Expander.Expanding Event
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
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
- Attributes