单击DataGrid单元格编辑出现ComboBox，选择相应的值，要使数据写入数据库就要调用DataGrid的itemEditEnd事件，itemEditEnd事件是在离开编辑单元格后触发的.

itemEditEnd事件调用的方法

private function updatePro(event:DataGridEvent):void{
             	var dataField:String = event.dataField;//获取绑定字段的名称
             	
           var proId:String = mydate.selectedItem.proId;//获取id
             	if(dataField=="completePreStr"){
             	var newData:String = "";
             	try{
             		newData = ComboBox(event.currentTarget.itemEditorInstance).selectedLabel//获取编辑后的新值
             }catch(errObject:Error){          	}
             	//判断为null的情况,否则很容易出现TypeError: Error #1009: 无法访问空对象引用的属性或方法
             if(newData!=null){
             		myProService.updateCompletePreStr(proId,newData);//调用更新方法
             }
             	}
             }

?全部源码:

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" backgroundColor="white" creationComplete="init2();init();" height="1332" backgroundGradientAlphas="[1.0, 1.0]" backgroundGradientColors="[#FCFCFC, #040303]" xmlns:local="*" xmlns:ns1="com.esria.samples.dashboard.view.*">
	<mx:Script>
        <![CDATA[
        	import mx.controls.List;
            import mx.collections.ArrayCollection;
            import mx.events.CuePointEvent;
            import mx.events.VideoEvent;
            import mx.controls.Alert;
			import mx.rpc.events.ResultEvent;
			import mx.events.DataGridEvent;
 
            
            [Bindable]
            private var FLV_URL:String = "zhajm_126296095230hd.flv";
 			
 			[Bindable]
            private var userInfoList:ArrayCollection;
            
            [Bindable]
            private var userInfo:Object;
            
            [Bindable]
            public var cards:ArrayCollection;
            /**
             * Initialize the ArrayCollection object.
             */
            private function init():void {
                department.getDepartment();
            }
            
            private function init2():void {
            	
                myservice.getProInfo("","");
            }
 			
 			public function resultHandler(result:ResultEvent):void{
				userInfoList = result.result as ArrayCollection;
				userInfo = userInfoList.getItemAt(0);
				//Alert.show(userInfo.userName);
			}
			
			private function changeHandler(event:Event):void {
            		myservice.getProInfo(departmentId.text,pageNum.text);
            }
            
            private function closeHandler(result:ResultEvent):void {
                cards = result.result as ArrayCollection;
            }
            
            private function formatDate(item:Object,column:DataGridColumn):String{
                if (item[column.dataField] == null) {
                 return "-";
                }
                return FD.format(item[column.dataField]);
               }
               
            private function formatPre(item:Object,column:DataGridColumn):String{
                if (item[column.dataField] == null) {
                 return "-";
                }
                if (item[column.dataField] == 1) {
                 return "模型";
                }
                if (item[column.dataField] == 2) {
                 return "预演";
                }
                if (item[column.dataField] == 3) {
                 return "小样";
                }
                if (item[column.dataField] == 4) {
                 return "渲染";
                }
                if (item[column.dataField] == 5) {
                 return "后期";
                }
                return item[column.dataField];
               }
             private function updatePro(event:DataGridEvent):void{
             	var dataField:String = event.dataField;//获取绑定字段的名称
             	
             	var proId:String = mydate.selectedItem.proId;//获取id