[Flinch]

Точный путь не помогает((.Подробный код .

<?xml version="1.0" encoding="utf-8"?>
<s:WindowedApplication xmlns:fx="http://ns.adobe.com/mxml/2009" 
					   xmlns:s="library://ns.adobe.com/flex/spark" 
					   xmlns:mx="library://ns.adobe.com/flex/mx">
 
	<fx:Script>
		<![CDATA[
			var a:int=0;
			protected function button1_clickHandler(event:MouseEvent):void
			{
 
 
					var treb1:Object= new Object();
					treb1.df_id=L_ID.text;
					treb1.df_name=L_Name.text;
					treb1.df_mark=L_Mark.text;
 
 
					if (spisokXML.ychenik[0] == null )
					{
						a=0;
					}
					else
					{
						a=spisokXML.children().length()-1 
						a=a+1;
					}
					spisokXML.appendChild(<ychenik ID=" "> </ychenik>);
					spisokXML.ychenik[a].@ID=a;
					spisokXML.ychenik[a].df_id=treb1.df_id;
					spisokXML.ychenik[a].df_name=treb1.df_name;
					spisokXML.ychenik[a].df_mark=treb1.df_mark;
 
					DataG.dataProvider=spisokXML.ychenik;
					a++
 
				}
 
			protected function button2_clickHandler(event:MouseEvent):void
			{
				// TODO Auto-generated method stub
				var fr:FileReference = new FileReference();
				fr.save( spisokXML, 'spisok.xml')
			}
 
		]]>
	</fx:Script>
 
	<fx:Declarations>
		<!-- Разместить невизуальные элементы (например, службы или объекты значений) -->
		<fx:XML id="spisokXML" xmlns=""   format="e4x" source="spisok.xml" />
	</fx:Declarations>
	<mx:DataGrid id="DataG"  x="91" y="191" width="515" height="207"
				 dataProvider="{spisokXML.ychenik}" editable="true"> 
		<mx:columns>
 
			<mx:DataGridColumn editable="true" dataField="df_id" headerText="Id" />
			<mx:DataGridColumn editable="true" dataField="df_name" headerText="Name"/>
			<mx:DataGridColumn editable="true" dataField="df_mark" headerText="Mark"/>
 
		</mx:columns>
 
	</mx:DataGrid>
	<s:Button  x="223" y="471" label="add" click="button1_clickHandler(event)"/>
	<s:TextInput id="L_ID" x="165" y="42"/>
	<s:TextInput id="L_Name" x="165" y="77"/>
	<s:TextInput id="L_Mark" x="165" y="119"/>
	<s:Button x="435" y="470" label="save" click="button2_clickHandler(event)"/>
 
</s:WindowedApplication>