Tree Control Updated.

On Tree control i wish to provide link click or double click and a context menu simultaneously. How can i do that using cl_gui_alv_tree and version 4.6c.

Hi Amit,
Please refer the demo programs
BCALV_TREE* .
Which gives you more info.
Hope this will help you.
Thanks&Regards,
Siri.

Similar Messages

How to get all items under a parent item in a tree control

Hello,
I have 2 questions regarding a tree control:
1) Is there any way to specify a parent item tag and get an array of ALL its sub item tags? For example, in the attached vi, specify the Parent#2 parent tag and get an array containing Item#P21 and Item#P22
2) Is there a way to specify a range to the ActiveCell property. For example, all items from line#1 to line number#3
Any ideas?
Attachments:
Tree example.vi ‏6 KB

Mentos wrote:
1) Is there any way to specify a parent item tag and get an array of ALL its sub item tags? For example, in the attached vi, specify the Parent#2 parent tag and get an array containing Item#P21 and Item#P22
Did you try a search? There's no direct way of doing this. You have to navigate the tree and build up an array. You can find an example here: http://forums.ni.com/t5/LabVIEW/get-all-children-of-a-parent-in-tree/td-p/729548
2) Is there a way to specify a range to the ActiveCell property. For example, all items from line#1 to line number#3
No. (It's called ActiveCell, not ActiveCells) Presumably you are trying to perform an operation on multiple items. Unfortunately, you need to use a loop. You should defer panel updates if you're doing this a lot.

Add multiple elements to a tree control at once

I am using a Tree Control to display customer and certificate information. However, adding 500 customer names or certificate numbers to the tree control one at a time takes for ever (well, 30000 ms). Is there any way to add multiple elements to a tree all at once, or is the only solution to use a listbox with 'forward' and 'back' buttons ?
thanks,
michael

Hi Michael
I don’t believe there is a way to supply a list of child items to a parent item, they have to be added incrementally. One way that you could speed this process up is to design your code such that only when you expand an item does it add the child items.
If you want an even higher update rate have a look at using the ActiveX TreeView control, you will find an example called Family Tree.vi in the LV examples.
I'll do up some code that makes using both of the controls more efficient if enough people want it.
Kurt Friday
www.sciware.com.au

Flex tree control expanditem dynamically..?

Hi All.,
 I have using tree control using to display. when i pass the data with folder id dynamically to expanding particular child node of tree.
 How to extarct tree with dynamic...?
Below sample coding.....
<mx:tree id="folderTree" />
folderid=2618;
 callLater(expandTree, [folderid]);
 private function expandTree(folderid: Object) : void
 folderTree.expandChildrenOf(folderTree.getChildAt(0), true);
 folderTree.selectedItem = folderid;
but not extracting tree.
anyone help this problem
With Regards.,
Lings

Thanks buddy for the answer.
Unfortunately the answer came after quite long time of posting the message. Anyway I was able to open a tree on demand using HttpService and due to my new requirement I changed it to RemoteObject.
I my latest change I am able to populate tree nodes on demand and also the same solution if getting update from server via JMS using Consumer object.
I kind a like this solution because it took me good amount of effort to find the right solution.
If any one is intersted the he/she can reply to the post and I can provide code here or may at some location so that it can be easily downloaded.
The solution is Flex-Grails combination.
Thanks everybody.

Issue : drag and drop from list control to tree control

Hi,
I was trying a drag and drop from list control to tree control. I have used some sample data to populate list and tree controls .
It is working fine . except one problem ..
Prob : when i drag an item to tree control .. it gets added .. now tree contains (X+1) data in list .. say X is the inital number of nodes in a tree node.
 now if i drag another item from list to last item in the tree node .. i.e at X+1 index. .. it throws null pointer exception.
I am considerably new in flex programming . looking for help from experts ..
Below is my code :
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
 layout="horizontal"
 creationComplete="init()">
 <mx:Script>
 <![CDATA[
 import mx.controls.listClasses.IListItemRenderer;
 import mx.rpc.events.FaultEvent;
 import mx.rpc.events.ResultEvent;
 import mx.utils.ObjectUtil;
 import mx.collections.ICollectionView;
 import mx.core.UIComponent;
 import mx.managers.DragManager;
 import mx.events.DragEvent;
 import mx.controls.Alert;
 import mx.controls.Label;
 import mx.events.CloseEvent;
 private var homePath:String="/home/e311394/dndTest/";
 private var destPath:String="/home/e311394/dndDest/";
 private var eid:String="e311394";
 private var actn:String;
 [Bindable]
 private var cm:ContextMenu;
 private var cmi:ContextMenuItem;
 [Bindable]
 private var dp:ArrayCollection;
 private function init():void
 cmi=new ContextMenuItem("Remove");
 cmi.enabled=true;
 cmi.addEventListener(ContextMenuEvent.MENU_ITEM_SELECT, contextMenuItem_menuItemSelect);
 cm=new ContextMenu();
 cm.hideBuiltInItems();
 cm.customItems=[cmi];
 cm.addEventListener(ContextMenuEvent.MENU_SELECT, contextMenuItem_menuSelect);
 list.contextMenu=cm;
 private function contextMenuItem_menuSelect(evt:ContextMenuEvent):void
 list.selectedIndex=lastRollOverIndex;
 private function contextMenuItem_menuItemSelect(evt:ContextMenuEvent):void
 var loclSelectedRow:Object=list.selectedItem;
 var lostrSelectedMenuItem:String;
 lostrSelectedMenuItem=evt.target.caption;
 if (loclSelectedRow != null)
 var obj:Object=new Object()
 obj.label=loclSelectedRow.label as String;
 //Alert.show(obj.label);
 if (lostrSelectedMenuItem == "Remove")
 if(loclSelectedRow!=null)
 var pth:String=homePath.concat(loclSelectedRow.label);
 //Alert.show(pth);
 //FlexDnDRemoteService.process(eid,"delete",pth,"-");
 var coll:ArrayCollection=list.dataProvider as ArrayCollection;
 if (coll.contains(loclSelectedRow))
 coll.removeItemAt(coll.getItemIndex(loclSelectedRow));
 public function onTreeDragEnter(event:DragEvent):void
 event.preventDefault();
 DragManager.acceptDragDrop(event.target as UIComponent);
 tree.showDropFeedback(event);
 protected function onTreeDragOver(event:DragEvent):void
 event.preventDefault();
 event.currentTarget.hideDropFeedback(event);
 try
 var index:int=tree.calculateDropIndex(event);
 catch (e:Error)
 DragManager.showFeedback(DragManager.NONE);
 return;
 tree.selectedIndex=index;
 var draggedOverItem:Object=tree.selectedItem;
 public function onTreeDragExit(event:DragEvent):void
 event.preventDefault();
 tree.hideDropFeedback(event);
 private function showAlert():void
 Alert.yesLabel="Move";
 Alert.noLabel="Copy";
 Alert.buttonWidth=70;
 Alert.show("Copy / Move ?", "Confirm", Alert.YES | Alert.NO | Alert.CANCEL, this, alertListener, null, Alert.OK);
 private function alertListener(eventObj:CloseEvent):void
 var result:Boolean=false;
 if (eventObj.detail == Alert.CANCEL)
 //Alert.show("CANCEL");
 return;
 if (eventObj.detail == Alert.YES)
 //Alert.show("YES");
 result=true;
 else if (eventObj.detail == Alert.NO)
 //Alert.show("NO");
 result=false;
 var index:int=tree.calculateDropIndex(treedropevt);
 //Alert.show("Drop Pos" + index.toString());
 /* var treeList:ArrayCollection=tree.dataProvider as ArrayCollection;
 Alert.show(" index"+index+"Length "+treeList.length);
 if(index > treeList.length)
 Alert.show("Returning");
 return;
 var items:Array=new Array();
 if (treedropevt.dragSource.hasFormat("items"))
 items=items.concat(treedropevt.dragSource.dataForFormat("items") as Array);
 var parentItem:Object;
 parentItem=getObjectTarget();
 /* if (tree.dataDescriptor.isBranch(tree.indexToItemRenderer(index).data))
 parentItem=tree.indexToItemRenderer(index).data;
 else
 var dropParentPackage:Object = tree.mx_internal::_dropData.parent as Object;
 Alert.show("HAck"+dropParentPackage.toString());
 parentItem=tree.getParentItem(tree.indexToItemRenderer(index).data);
 //Alert.show("Lenght "+ObjectUtil.getClassInfo(parentItem).properties.length);
 //Alert.show("Lenght "+ObjectUtil.getClassInfo(parentItem).properties.length);
 var position:int=0;
 /* if(ObjectUtil.getClassInfo(parentItem).properties.length==0)
 Alert.show("Returning");
 return;
 if (parentItem != null)
 try
 while (tree.indexToItemRenderer(index).data != parentItem)
 //Alert.show(tree.indexToItemRenderer(index).data.toString());
 if (index > 0)
 index--;
 //Alert.show("Insiade");
 position++;
 catch (e:Error)
 Alert.show("Catch" + index.toString());
 return;
 for each (var item:Object in items)
 var obj:Object=new Object()
 obj.label=item.label as String;
 if (parentItem != null)
 //Alert.show("ADDED");
 tree.dataDescriptor.addChildAt(parentItem, obj, position++);
 else
 //Alert.show("PARENT NULL");
 tree.dataDescriptor.addChildAt(tree.selectedItem, obj, position++);
 var spth:String=homePath.concat(item.label);
 //Alert.show(spth);
 var dpth:String=destPath.concat(item.label);
 //Alert.show(dpth);
 if (result == true)
 removeItems();
 //FlexDnDRemoteService.process(eid,"move",spth,dpth);
 else
 //FlexDnDRemoteService.process(eid,"copy",spth,dpth);
 tree.validateNow();
 public function getObjectTarget():Object
 var dropData:Object=tree.mx_internal::_dropData as Object;
 if (dropData.parent != null)
 return dropData.parent;
 else
 // if there is not parent (root of the tree), I take the root directly
 var renderer:IListItemRenderer=tree.indexToItemRenderer(0);
 return renderer.data;
 public function removeItems():void
 //remove moved elements
 var items:Array=treedropevt.dragSource.dataForFormat("items") as Array;
 var coll:ArrayCollection=list.dataProvider as ArrayCollection;
 for each (var item:Object in items)
 if (coll.contains(item))
 coll.removeItemAt(coll.getItemIndex(item));
 private var treedropevt:DragEvent;
 public function onTreeDragDrop(event:DragEvent):void
 treedropevt=event;
 showAlert();
 event.preventDefault();
 tree.hideDropFeedback(event);
 public function resultHandler(event:ResultEvent):void
 Alert.show("Success", "Status");
 public function faultHandler(event:FaultEvent):void
 Alert.show(event.fault.faultString, "Failure");
 ]]>
 </mx:Script>
 <mx:ArrayCollection id="listDP">
 <mx:Object label="File1.dnd"/>
 <mx:Object label="File2.dnd"/>
 <mx:Object label="File3.dnd"/>
 <mx:Object label="File4.dnd"/>
 <mx:Object label="File5.dnd"/>
 </mx:ArrayCollection>
 <mx:Number id="lastRollOverIndex"/>
 
 <mx:ArrayCollection id="treeDP">
 <mx:Object label="/dndDest">
 <mx:children>
 <mx:ArrayCollection>
 <mx:Object label="sample1.ks"/>
 <mx:Object label="sample2.ks"/>
 <mx:Object label="sample3.ks"/>
 <mx:Object label="sample4.ks"/>
 <mx:Object label="sample5.ks"/>
 <mx:Object label="sample6.ks"/>
 </mx:ArrayCollection>
 </mx:children>
 </mx:Object>
 </mx:ArrayCollection>
 <mx:List id="list"
 itemRollOver="lastRollOverIndex = event.rowIndex"
 width="50%"
 dragEnabled="true"
 dataProvider="{listDP}"
 labelField="label"
 allowMultipleSelection="true"
 dragMoveEnabled="false">
 </mx:List>
 <mx:Tree id="tree"
 width="50%"
 dragEnabled="true"
 dataProvider="{treeDP}"
 dragEnter="onTreeDragEnter(event)"
 dragOver="onTreeDragOver(event)"
 dragExit="onTreeDragExit(event)"
 dragDrop="onTreeDragDrop(event)"
 labelField="label"
 liveScrolling="true">
 </mx:Tree>
 <mx:RemoteObject id="FlexDnDRemoteService"
 showBusyCursor="true"
 destination="FlexDnD">
 <mx:method name="process"
 result="resultHandler(event)"
 fault="faultHandler(event)"/>
 </mx:RemoteObject>
</mx:Application>
Thanks,
Rajiv

Ya , i have searched and have used the same code.
But needed to customize few things like:
stop dnd in same tree
drop some item into a folder ..( onto it ) etc
have achieved the same .. but this issue ..
i think the tree dataprovider (contents internally is not being updated .. only the UI)
any suggestions ?
- Rajiv

Populate flex tree control on demand using HTTPService (Flex 3)

First, I am sorry if the same post is already posted here but after spending 30 minutes or may be more I could not find the solution.
By the way I have two problems. 1.) I am new to flex which I know if my own problem and soon I will handle it.
2.) This is major problem for me. I have to populate Tree control from database and I used HTTPService to get the data from database.
I created a object of HTTPService and on load of Tree control I am calling a function which calls the HTTP URL and returns me the first level of node for my Tree.
When I click on any node a function is called again using HTTPService and result is appended to the currently selected node. The same goes until n level and it works fine. I was happy with my results. I am stuck in new problem. The problem is if the tree is already populated on my browser and I make some add/update/delete any node or child node, the flex doesn't make a call to HTTP URL and I am not getting updated data.
The mxml code is below (this code has some extra things too).
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
layout="vertical" backgroundGradientAlphas="[1.0, 1.0]"
backgroundGradientColors="[#000000, #868686]" >
<mx:Script>
<![CDATA[
 import mx.utils.StringUtil;
 import mx.rpc.http.HTTPService;
 import mx.events.ListEvent;
 import mx.binding.utils.BindingUtils;
 import mx.controls.Alert;
 import mx.rpc.events.FaultEvent;
 import mx.collections.XMLListCollection;
 import mx.utils.ObjectProxy;
 import mx.collections.ArrayCollection;
 import mx.rpc.events.ResultEvent;
 import mx.utils.ArrayUtil;
 [Bindable]
 public var datalist:XMLListCollection = new XMLListCollection();
 [Bindable]
 public var xmlFromDatabase:HTTPService=new HTTPService();
 [Bindable]
 private var xmlForChildren:HTTPService;
 private function resultHandler( event:ResultEvent ):void
 var x:XML = event.result as XML;
 var xl:XMLList = XMLList( x );
 private function faultHandler( event:FaultEvent ):void
 Alert.show(event.message.toString());
 private function display():void
 var params:Object = {};
 params["parent"] = "0";
 xmlFromDatabase.url = "http://localhost:8080/GrailsFlex/department/tree";
 xmlFromDatabase.method = "GET";
 xmlFromDatabase.resultFormat = "e4x";
 xmlFromDatabase.useProxy = false;
 xmlFromDatabase.send(params);
 xmlFromDatabase.addEventListener(ResultEvent.RESULT,displyTree,false,0,false);
 private function displyTree(event:ResultEvent):void
 XMLtree1.dataProvider = event.result;
 XMLtree1.labelField = "@name";
 private function getChilds(event:ListEvent):void
 try
 var xmlTree:Tree = event.currentTarget as Tree;
 var node:XML = xmlTree.selectedItem as XML
 var params:Object = {};
 params["parent"] = node.@id;
 xmlForChildren = new HTTPService();
 xmlForChildren.url = "http://localhost:8080/GrailsFlex/department/tree";
 xmlForChildren.method = "GET";
 xmlForChildren.resultFormat = "e4x";
 xmlForChildren.useProxy = false;
 xmlForChildren.send(params);
 xmlForChildren.addEventListener(ResultEvent.RESULT,appendChild,false,0,false);
 xmlForChildren.addEventListener(ListEvent.ITEM_CLICK,getChilds,false,0,false);
 catch (E:Error)
 Alert.show("getChilds Error:-- " + E.message);
 private function deleteTreeNode(xmlItem:XML):void
 var xmlParent:XML = XML(xmlItem).parent();
 if (xmlParent.@parent == null || StringUtil.trim(xmlParent.@parent) == "")
 xmlParent.@parent = "0";
 if (xmlParent.@parent != "0")
 //Recursive call until I get reach to children of root node
 deleteTreeNode(xmlParent);
 else
 // Now I am at root.
 var xmlRoot:XML = XML(xmlParent).parent();
 var bActualRoot:Boolean = false;
 if (xmlRoot == null)
 xmlRoot = xmlParent;
 bActualRoot = true;
 if (bActualRoot)
 if (xmlRoot.@parent == "0")
 try
 for each (var xl:XML in xmlParent.children())
 if (xl.@name != xmlItem.@name)
 for (var cn:int=xl.children().length()-1; cn >=0; cn--)
 delete xl.children()[cn];
 catch (ex:Error)
 Alert.show("error Real Root: " + ex.toString());
 else
 for each (var nodexm:XML in xmlRoot.children() )
 if (nodexm.@name != xmlParent.@name )
 try
 for (var cu:int=nodexm.children().length()-1; cu >=0; cu--)
 delete nodexm.children()[cu];
 catch (ex:Error)
 Alert.show("error No Real Root: " + ex.toString());
 private function appendChild(event:ResultEvent):void
 var node:XML = event.result as XML
 var sItem: XML = XMLtree1.selectedItem as XML;
 if (sItem.children().length() > 0)
 delete sItem.children();
 for(var i:int=0; i < node.children().length(); i++)
 var item:XML = node.children()[i];
 XMLtree1.selectedItem.appendChild(item);
 XMLtree1.expandItem(XMLtree1.selectedItem,true,true);
 deleteTreeNode(XML(XMLtree1.selectedItem));
]]>
</mx:Script>
<mx:Tree id="XMLtree1" width="350" height="470"
 showRoot="false" creationComplete="display()" itemClick="getChilds(event)" />
</mx:Application>
Thanks in advance

Thanks buddy for the answer.
Unfortunately the answer came after quite long time of posting the message. Anyway I was able to open a tree on demand using HttpService and due to my new requirement I changed it to RemoteObject.
I my latest change I am able to populate tree nodes on demand and also the same solution if getting update from server via JMS using Consumer object.
I kind a like this solution because it took me good amount of effort to find the right solution.
If any one is intersted the he/she can reply to the post and I can provide code here or may at some location so that it can be easily downloaded.
The solution is Flex-Grails combination.
Thanks everybody.

Tree Control ActiveX and the Runtime - help...

We've build a BridgeView application that lets you select past datasets
using a tree control. It works fine when the BV development system is
installed, but when we remove it and replace it with a Run-time
version, the control is no longer visible or active....
TIA,
Thor Johnson
[email protected]
www.advance-it.com
Sent via Deja.com http://www.deja.com/
Share what you know. Learn what you don't.

Thanks for your answer. Unfortunately I am stuck to Labview 7.1 for other reasons and the defer front panel updates only improves my numbers by a 30% which is not enough as already mentioned by the post you refer to. Sadly enough the 'add multiple items' method is not available for the same string control in Labview 7.1. Maybe I should investigate further in the Active X area...
Christophe

Unnecessary Code - Directory Hierarchy in Tree Control.vi Shipping Example

Hello,
Can you guys take a look at the shipping example Directory Hierarchy in Tree Control.vi (---\Program Files\National Instruments\LabVIEW 2010\examples\general\controls\Tree Control Directory.llb\Directory Hierarchy in Tree Control.vi on my machine) and let me know if you see some unnecessary code? I see what seems to be two different updates of the same front panel control in the TRUE frame of the case structure in the middle of the diagram. I can't think of the reason why you would need both updates of the Path to Start the Search control. I think one of the updates would be good enough.
Thanks!

Sorry.
Here it is.
Attachments:
Directory Hierarchy in Tree Control BD.png ‏32 KB

SAP GUI hangs up - tree control

Hi,
I have written an ABAP program to display a report in tree format. This tree(designed using SAPGUI tree control) has close to 75K nodes. When I exit from this application(report), the SAPGUI hangs up. It takes about 25-30 minutes to exit this report program.
Further analysis tells me that it is only the front end process and NOT the runtime of the program. I am using Windows.
I am not sure how much this forum is relevant to this problem. But, any inputs on the reason for a slow performing GUI is appreciated.
Thanks,
Hema

There are some known performance issues with older patchlevels, since you neither mention, what GUI version you use and which patchlevel I would just recommend updating to 7.20 and the latest patchlevel and try again.
If that doesn't help the only thing left is to decrease the amount of data being sent to the frontend.
Markus

Folder directory maps to tree control?

How can I maps folder directory to tree control? Is it even
possible? For example:
I want the tree to show all files and folders under
"C:\Documents and Settings\User\My Documents". Possible?

The Flashplayer Sandbox does not allow you to get information
of you file system directly, but there are severel ways to solve
the problem.
1.) you can use webservices which you communicate with (the
webservice can give you the information and then you have to handle
the webservice result)
2.) you can use coldfusion
3.) You can load a file form your system (with Urlrequest, or
httpservice) which represents your folder you want to display.
e.g.: you have a xml-file with all the required information,
then you parse through the xml-file, the disadvantage is, that you
always have to update you xml-file manually or with a script

Problems handling xml data for tree control.

Hi,
I have tried using tree control for displaying my xml data
but I had a problem that i did not have labels in my xml data. A
sample xml data is attached. So it displays the whole data at each
level in the tree. The root label will be the entire the xml data
and then one level down the remaining xml data and so on...
How do i solve this issue i,e get the tags names itself as
labels..
Thanks in advance....

An update after some efforts..
Could get the folders perfectly i.e until the level of
CPUTime perfectly but could not get the leaf: 32 since i used the
following to set the label.
I would like to know if there is a way to find out if a node
is a leaf or folder and according set the label

LV7 Tree control Modify Left Cell String

Is it possible to modify the "Left Cell String" of a tree node - I can't find the appropriate method or property to do this.
Cheers,
Wayne

Pleeeeaaaasssseee don't use stacked sequence structures. Use flat sequence structures if you need to. And even then in your code you can eliminate most of them by using property nodes and error wires appropriately..
Look at https://decibel.ni.com/content/docs/DOC-4519. Use Defer Panel updates to speed up the execution when updating multiple tree control properties.
See attached modified VI.
Attachments:
TreeExampleMOD.vi ‏27 KB

How can I display and change built-in symbols of a tree control programmatically?

I want to set the built-in symbols of a tree control during runtime.
I only found an example to assign custom pictures but not how to select one of the 40 built-in symbol.
Many Thanks
Solved!
Go to Solution.

The ActiveItem.SymbolIndex will allow you to select the symbol for the active item. You can use the ListBox Symbol Ring Constant (Dialog and User Interface palette) to select a symbol (or you can just enter the number directly if you know what it is).
Message Edited by smercurio_fc on 07-10-2008 09:36 AM
Attachments:
Example_VI_BD6.png ‏2 KB

Not able to get the database data into the Tree Control

Hi Everybody,
I have to populate the tree control with nodes and items, which is to be populated from the database, and the tree control is dynamic. I mean, there is a toolbar, whenever a pushbutton is clicked, depending on that the tree contents has to be changed.
If anybody had worked with CL_GUI_COLUMN_TREE control to get the data from database, depending upon the pushbutton selected in Toolbar, please paste the seudocode for it.
Regards,
Abdul,
Intelligroup.
P.S: Helpful answers will be rewarded.

have you seen this demo program
SAPCOLUMN_TREE_CONTROL_DEMO
Regards
Raja

How to binding incoming xml node list to the tree control as dataProvider

Recently, I faced into one issue: I want to binding incoming xml node (it's not avaliable at start) list to the tree control as a dataProvider.
Since the incoming xml node list is not avaliable at beginning but I needs to bind it to the tree, so I create one virtual one in the xml, and prepare to remove it before the tree is shown. (ready for the actual node adding). But It did not work.
Please see the presudo-code here:
1. Model layer(CsModel.as)
public class CsModel
 [Bindable]
 public var treeXML:XML=<nodes><car label="virtualOne" id="1">
 </car></nodes>;
 (Here, I want to build binding relationship on the <car/> node,
 one 'virtual/stub' node is set here with lable="virtualOne".
 But this node will be deleted after IdTree
 control is created completely.)
 [Bindable]
 public var treeData:XMLList =new XMLListCollection(treeXML.car);
2. view layer(treePage.mxml)
 private var _model:CsModel = new CsModel();
 private function addNode():void
 var newNode:XML=<car/>;
 newNode.@label="newOne";
 newNode.@id=1;
 _model.treeXML.appendChild(newNode);
 private function cleanData():void
 delete _model.treeXML.car;
 <mx:VBox height="100%" width="100%">
 <mx:Button label="AddNode" click="addNode()" />
 <mx:Tree id="IdTree" labelField="@label"
 creationComplete="cleanData()"
 dataProvider="{_model}"/>
 </mx:VBox>
3. Top view layer (App.Mxml)
<mx:application>
 <treePage />
</mx:application>
For method: cleanData()，It's expected that when the treePage is shown, we first delete the virutalOne to provide one 'clear' tree since we don't want show virtualOne to the user. The virutalOne node just for building the relationship between treeData and treeXML at beginning. But the side effect of this method, I found, is that the relationship between treeXML and treeData was cut off. And this leads to that when I added new node (by click the 'addNode' button) to the xmlXML, the xmlData was not affected at all !
So Is there any other way to solve this issue or bind the incoming xml node list to the xmlListCollection which will be used as Tree control's dataProvider ?

If u want to display the name : value then u can do like this
<xsl:eval>this.selectSingleNode("name").nodeName</xsl:eval> : <xsl:value-of select="name" />

Tree Control Updated.

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