DataGrid.change

Availability

Flash Player 6 (6.0.79.0).

Edition

Flash MX Professional 2004.

Usage

listenerObject = new Object();
listenerObject.change = function(eventObject){
    // Insert your code here.
}
myDataGridInstance.addEventListener("change", listenerObject)

Description

Event; broadcast to all registered listeners when an item has been selected.

Components use a dispatcher/listener event model. When a DataGrid component dispatches a change event, the event is handled by a function (also called a handler) that is attached to a listener object (listenerObject) that you create. You call the addEventListener() method and pass it the name of the handler as a parameter.

When the event is triggered, it automatically passes an event object (eventObject) to the handler. Each event object has properties that contain information about the event. You can use these properties to write code that handles the event. The DataGrid.change event's event object has one additional property, type, whose value is "change". For more information, see EventDispatcher class.

Example

In the following example, a handler called dgListener is defined and passed to grid.addEventListener() as the second parameter. The event object is captured by the change handler in the evt_obj parameter. When the change event is broadcast, a trace statement is sent to the Output panel. With a DataGrid instance named my_dg on the Stage, paste the following code in the first frame of the main timeline:

// Set up sample data.
my_dg.dataProvider = [{name:"Clark", score:3135}, {name:"Bruce", score:403}, {name:"Peter", score:25}];

// Create listener object.
var dgListener:Object = new Object();
dgListener.change = function(evt_obj:Object) {
 trace("The selection has changed to " + evt_obj.target.selectedIndex);
};

// Add listener.
my_dg.addEventListener("change", dgListener);

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