ParameterCollection.ParametersChanged Event


Occurs when one or more Parameter objects contained by the collection changes state.

 event EventHandler ^ ParametersChanged;
public event EventHandler ParametersChanged;
member this.ParametersChanged : EventHandler 
Public Custom Event ParametersChanged As EventHandler 

Event Type



If the ParameterCollection collection is contained by a data source control, the ParametersChanged event raises the data source control's DataSourceChanged event, causing any data-bound controls to rebind.

Raising an event invokes the event handler through a delegate. For more information, see Handling and Raising Events.

The OnParameterChanged method also allows derived classes to handle the event without attaching a delegate. This is the preferred technique for handling the event in a derived class.

Notes to Inheritors

When overriding OnParameterChanged() in a derived class, be sure to call the base class's OnParameterChanged() method so that registered delegates receive the event.

Applies to