Flex + .Net从本地选择一个图片上传到服务器

<mx:TextInput id="TxtFileName" editable="false" width="200"/>

<mx:Image id="btnBrowser" toolTip="Browser" buttonMode="true" click="fileBrowser(event)"                    
  source="@Embed(source='../assets/icon/icon_browser.png')"/>
<mx:Button id="btnUpload" label="Upload" buttonMode="true" click="addAttachment(event)"  skin="@Embed(source='../assets/skin/btn_skin.gif')"  width="80" height="23" />

新建一个 textiput存储显示文件名和image来做button选取本地图片文件。

触发的事件代码

private var curfile:FileReference=new FileReference(); 
private var browerFlag:Boolean=false;

private function fileBrowser(event:Event):void

{                

                var imageTypes:FileFilter = new FileFilter("Images(*.jpg,*.jpeg,*.png,*.gif,*.bmp,*.pdf,*.tif)", "*.jpg;*.jpeg;*.png;*.gif;*.bmp;;*.pdf;*.tif");

                curfile.browse([imageTypes]);

}

程序initialize的时候为curfile加监听事件initialize="init()

private function init():void

{

　　curfile.addEventListener(Event.SELECT,addInTextinput);

}

private function addInTextinput(event:Event):void

{

　　TxtFileName.text = curfile.name;

}

 Button Upload的处理事件

            private function addAttachment(event:Event):void

            {            

                if(!browerFlag)

                {

                    return;

                }

                if(!curfile.type)

                {

                    browerFlag=false;

                    TxtFileName.text="";

                    Alert.show(CONSTANT.VoidFileType,CONSTANT.PROJNAME,Alert.OK);

                    return;

                }

                var type:String=curfile.type.toLowerCase();

                if(type&&type!='.jpg'&&type!='.png'&&type!='.bmp'&&type!='.gif'&&type!='.pdf'&&type!='.tif')

                {

                    browerFlag=false;

                    TxtFileName.text="";

                    Alert.show(CONSTANT.VoidFileType,CONSTANT.PROJNAME,Alert.OK);

                    return;

                }

                /* if(curfile.size>4194304) */

                if(curfile.size>10485760)

                { 

                    browerFlag=false;

                    TxtFileName.text="";

                    Alert.show(CONSTANT.AttachmentMax,CONSTANT.PROJNAME,Alert.OK);

                    return;

                }



                //---upload handler--------------

                var url:String = "UploadFileHandler.aspx?TempFileID="+SysParm.expInfo.ExpenseGUID+"&StaffID="+SysParm.curStaffInfo.StaffID;

                var reqUrl:URLRequest = new URLRequest(url);

                

                curfile.upload(reqUrl);    

        

            }

怎加两个上传结束以及捕捉错误的事件监听。

            private function init():void

            {

                curfile.addEventListener(Event.SELECT,addInTextinput);

                curfile.addEventListener(Event.COMPLETE,uploadComplete);

                curfile.addEventListener(IOErrorEvent.IO_ERROR,uploadError);

            }    

            private function uploadComplete(event:Event):void

            {    

                browerFlag=false;

                ExpenseFunction.removeBusy();

                Alert.show(CONSTANT.UploadSuccess,CONSTANT.PROJNAME,Alert.OK,null,refreshAttachmentHandler);                

            }    

            private function uploadError(ioError:IOErrorEvent):void

            {

                browerFlag=false;

                TxtFileName.text="";

                Alert.show(CONSTANT.UploadFail,CONSTANT.PROJNAME);

            }

            

            private function refreshAttachmentHandler(event:CloseEvent):void

            {

                TxtFileName.text="";

                browerFlag=false;



            }