设置日期选择组件(DateField )的选择范围

<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2007/12/17/setting-selectable-ranges-in-the-flex-datefield-control/ -->
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
        layout="vertical"
        verticalAlign="top"
        backgroundColor="white">
    <mx:Form>
        <mx:FormItem label="rangeStart only:">
            <mx:DateField id="dateField1"
                    showToday="false"
                    selectableRange="{{rangeStart:new Date()}}" />
        </mx:FormItem>
        <mx:FormItem label="rangeEnd only:">
            <mx:DateField id="dateField2"
                    showToday="false"
                    selectableRange="{{rangeEnd:new Date()}}" />
        </mx:FormItem>
        <mx:FormItem label="rangeStart/rangeEnd:">
            <mx:DateField id="dateField3"
                    showToday="false"
                    selectableRange="{{rangeStart:new Date(2007, 11, 3),
                                      rangeEnd:new Date(2007,11,28)}}" />
        </mx:FormItem>
    </mx:Form>
</mx:Application>