User Guide

DataSet.findLast() 367

To test this example, drag a DataSet component to the Stage, and give it an instance name of

student_ds. Add two properties, name (data type: String) and id (data type: Number) to the

DataSet by using the Schema tab of the Component inspector. If you don’t already have a

copy of the

DataBindingClasses compiled clip in your library, drag a copy of the compiled

clip from the Classes library (Window > Common Libraries > Classes). Add the following

ActionScript to Frame 1 of the main timeline:

student_ds.addItem({name:"Barry", id:103});

student_ds.addItem({name:"Bobby", id:105});

student_ds.addItem({name:"Billy", id:107});

trace("Before find() > " + student_ds.currentItem.name); // Billy

var studentID:String;

student_ds.addSort("id", ["name","id"]);

if (student_ds.find(["Bobby", 105])) {

studentID = student_ds.getItemId();

student_ds.locateById(studentID);

trace("After find() > " + student_ds.currentItem.name); // Bobby

} else {

trace("We lost Billy!");

}