设置日期选择组件(DateField )的选择范围。

selectableRange 属性
示例：

代码：

<? 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 >