IObservableMap<K,V>.MapChanged Event
Definition
Important
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Occurs when the map changes.
public:
event MapChangedEventHandler<K, V> ^ MapChanged;// Register
event_token MapChanged(MapChangedEventHandler<K, V> const& handler) const;
// Revoke with event_token
void MapChanged(event_token const* cookie) const;
// Revoke with event_revoker
IObservableMap`2::MapChanged_revoker MapChanged(auto_revoke_t, MapChangedEventHandler<K, V> const& handler) const;event MapChangedEventHandler<K,V> MapChanged;Event MapChanged As MapChangedEventHandler(Of K, V) Event Type
Remarks
The event handler receives an IMapChangedEventArgs<K> object that contains data that describes the event.
.NET usage
IObservableMap\<K,V\> isn't hidden for .NET usage. However, it's more common to use the .NET ObservableCollection<T> type (using a KeyValuePair as T) as a base class, or implement a Dictionary type or interface (generic or nongeneric) and INotifyCollectionChanged separately. If you do use IObservableMap\<K,V\> for .NET code, the base interfaces (and their members) project as System.Collections.Generic.IDictionary<TKey,TValue> and IEnumerable<T> (with KeyValuePair). MapChanged is the only API that's shared between the projections.