Defaulting selectedIndex in Combobox to be displayed

Problem

Loaded content into a Combobox but now need to display the default values in a form without having to manually select the 1st option.

Solution

You need to use dispatchEvent to fire the command.
Example below shows a combobox which has a resultset added to it (dataProvider). Then a change function is added but we need to fire the event straight away to populate the textinput and textarea components:

// adding result to combobox combobox.dataProvider = result; // creating change listener to be fired when a user chooses a value in the combobox var changeObj:Object = new Object(); changeObj.change = function(evt) { // populate the named textinput and textarea components // with data held in the combobox textinputTitle.text = evt.target.selectedItem.title; textareaDesc.text = evt.target.selectedItem.description; } combobox.addEventListener("change", changeObj); // HERE - fires change event to populate 1st entry result into // textinput and textarea combobox.dispatchEvent({type:"change", target:combobox});