Comments on Flex Developers & Development: XMLListCollection Basics

Hi,In my project Im dealing with loads of data as ...

2010-02-09T10:41:09.514-07:00

Hi,In my project Im dealing with loads of data as XML back and forth, so application got slow, how can I make it fast, what r different approach can be tried?

Any little help would be appreciated.

Thanks,
shailendra

@Manikandan To delete items (including their chil...

2009-12-22T10:56:08.957-07:00

@Manikandan

To delete items (including their children) from a Tree control's dataprovider (XMLListCollection), use the Tree's public property dataDescriptor.

The dataDescriptor object implements the ITreeDataDescriptor and, therefore, has a method named removeChildAt.

You can use it in this fashion:

public function removeSelectedTreeItem():void {
  var item2remove:XML = XML(tree.selectedItem);
  tree.dataDescriptor.removeChildAt(item2remove.parent(),item2remove,item2remove.childIndex());
}

You can also add an item using the dataDescriptor's addChildAt method but this could be much trickier depending on where you want to add it. Here's a simple example that adds a new item after the tree's currently selectedItem:

private function addNewTreeItem():void {
  var selectedItem:XML = XML(tree.selectedItem);
  if (selectedItem == NULL) return;
  var newItem:XML = <newElement/>;
  tree.dataDescriptor.addChildAt(selectedItem.parent(),newItem,selectedItem.childIndex()+1);
}

Hi i'm new to flex. i have tree dataprovider a...

2009-12-22T05:54:53.519-07:00

Hi i'm new to flex. i have tree dataprovider as xmllistcollection. i want to add xml at multi hierarchy level, and also delete a item from tree. while delete if that selected item has child nodes delete its childs also. i tried some flex example but it not working properly as per the requirement..

Thanks in advance..