flex复选框加记录

checkbox.mxml

<?xml version="1.0" encoding="utf-8"?>
<!--http://blog.csdn.net/lionFromAsia/archive/2008/11/27/3393067.aspx-->
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" creationComplete="onInit()" xmlns="*" fontSize="14" layout="absolute" backgroundGradientColors="[#ffffff, #c0c0c0]">
   <mx:Script>
            <![CDATA[
                  public function onInit():void
                    {
                             userRequest.send();
                   }

   import mx.controls.Alert;                                 //引入Alert完整组件类
            import mx.events.CloseEvent;
                  
   private function alertPopup(event:Event):void{
   if(userid.text!=""){
       Alert.okLabel="确定";                                    //修改OK按钮上的文字
       Alert.cancelLabel="取消";                                //修改Cancel按钮上的文字
              //调用Alert.show()弹出对话框，对话框上有确定和取消按钮
   //Alert.show("您确定要删除吗?", "警告", 3, this, alertClickHandler);
   Alert.show("您确定要删除吗?", "警告", Alert.OK|Alert.CANCEL, this, alertClickHandler);
   }
   else{
   Alert.okLabel="确定";                                    //修改OK按钮上的文字
              //调用Alert.show()弹出对话框，对话框上有确定和取消按钮
   Alert.show("请选择要删除的记录!!","警告",Alert.OK);
     }
  } 
  
         private function alertClickHandler(event:CloseEvent):void {
                if (event.detail==Alert.OK){
                   userRequest.send();
       showAndHide(1000);
                }
                else{
                }
            }

            import mx.controls.Alert;
            import mx.managers.PopUpManager;
 
            private var alert:Alert;
 
            private function showAndHide(delay:Number):void {
                var alertText:String = "成功删除!";
                var alertTitle:String = "恭喜";
                alert = Alert.show(alertText, alertTitle);
                setTimeout(hideAlert, delay);
            }
 
            private function hideAlert():void {
                PopUpManager.removePopUp(alert);
            }
        ]]>
    </mx:Script> 
 
  <mx:Script>
  <![CDATA[
   import mx.controls.Alert;
    public function doShow():void
    {
 //    var strCountry:String="";
 //    if (checkBox1.selected)
 //       strCountry+=checkBox1.label;
 //    if (checkBox2.selected)
 //       strCountry+=" " +checkBox2.label;
 //    if (checkBox3.selected)
 //       strCountry+=" " +checkBox3.label; 
//     Alert.show("您选择的国家有:"+strCountry);  

     countryname.text="";
     if (checkBox1.selected)
        countryname.text+=checkBox1.label;
     if (checkBox2.selected)
        countryname.text+=" " +checkBox2.label;
     if (checkBox3.selected)
        countryname.text+=" " +checkBox3.label; 
     Alert.show("您选择的国家有:"+countryname.text);  
    }
    
                     public function add():void
                     {
                           countryname.text="";
     if (checkBox1.selected)
        countryname.text+=checkBox1.label;
     if (checkBox2.selected)
        countryname.text+=" " +checkBox2.label;
     if (checkBox3.selected)
        countryname.text+=" " +checkBox3.label; 
        if(countryname.text==""){
        Alert.show("请选择填项!!","警告",Alert.OK); 
        }
        else{
                     useredit.send();
                     Alert.show("添加成功!!","警告",Alert.OK);
                     userRequest.send();
        }
                     }     
   
  ]]>
 </mx:Script> 
   <mx:Label id="label1" text="Datagrid实例一" x="74" y="25" fontSize="20"></mx:Label>
     <mx:HTTPService id="useredit" url="datagrid.php" useProxy="false" method="POST">
       <mx:request xmlns="">
          <countryname>{countryname.text}</countryname>
       </mx:request>
   </mx:HTTPService>
 
   <mx:HTTPService id="userRequest" url="datagrid.php" useProxy="false" method="POST">
       <mx:request xmlns="">
         <userid>{userid.text}</userid>
       </mx:request>
   </mx:HTTPService>
   <mx:DataGrid id="dgUserRequest" x="74" y="64" dataProvider="{userRequest.lastResult.users.user}" width="581" textAlign="center" height="212">
       <mx:columns>
         <mx:DataGridColumn headerText="用户ID" dataField="userid"/>
         <mx:DataGridColumn headerText="用户名" dataField="username"/>
         <mx:DataGridColumn headerText="Email" dataField="emailaddress"/>
       </mx:columns>
   </mx:DataGrid>
   <mx:Button  label="删除" click="alertPopup(event)" x="74" y="293"/>
     <mx:TextInput x="230" y="102" id="userid" text="{dgUserRequest.selectedItem.userid}" visible="false" width="48"/>
    
         <mx:Panel width="396" height="261" layout="absolute" borderStyle="inset" backgroundColor="#EA6F0B" borderColor="#F50E0E" horizontalCenter="128" verticalCenter="120">
 <mx:CheckBox x="116" y="22" label="China" color="#0A20F8" fontSize="16" fontWeight="bold" id="checkBox1"/>
  <mx:CheckBox x="116" y="58" label="England" color="#0A20F8" fontSize="16" fontWeight="bold" id="checkBox2"/>
  <mx:CheckBox x="116" y="94" label="USA" color="#0A20F8" fontSize="16" fontWeight="bold" id="checkBox3"/>
  <mx:Label id="countryname" text="" x="27" y="0" width="221" visible="true">
  </mx:Label>
  <!--<mx:Button x="108" y="152" label="Show" click="doShow()" color="#0A15F8"/>-->
  <mx:Button x="191" y="152" label="Add" click="add()" color="#0A15F8"/>
 </mx:Panel>
</mx:Application>