Expander.Expanding Evento

Definição

Namespace:

Microsoft.UI.Xaml.Controls

Ocorre quando a área de conteúdo do Expansor começa a ser mostrada.

// 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;

public event TypedEventHandler<Expander,ExpanderExpandingEventArgs> Expanding;

function onExpanding(eventArgs) { /* Your code */ }
expander.addEventListener("expanding", onExpanding);
expander.removeEventListener("expanding", onExpanding);
- or -
expander.onexpanding = onExpanding;

Public Custom Event Expanding As TypedEventHandler(Of Expander, ExpanderExpandingEventArgs) 

Tipo de evento

TypedEventHandler<Expander,ExpanderExpandingEventArgs>