flex: how to refresh (reinitialize) list

Question

Hello; I am a Java developer who tries Flex.

So my new problem is such:

I have a list component in Flex filled by objects got from Java (by binding dataprovider). I have put drag-drop support on list. Everything is good. But I wanted to have a reset function to reinitialize list, namely get back drag-dropped elements to the list.

I tried several thing on event handler of reset button but could not reinitialise the list data. For example:

public function resetList():void {
     trace("reset")
     listsrc.dataProvider = srv.getTerritories.lastResult
    }

"reset" is debugged but there is no change on list.

Thanks;

Answer 1

try listsrc.invalidateList();

Answer 2

I found it. In fact it is simple. I just said:

public function resetList():void {
        trace("reset")
        srv.getTerritories.send()
    }

Because is already binded; any change in data provider is directly reflected to list.

Answer 3

another way to do this is to have the control be bound to a arrayCollection that is bindable.

[Bindable]
var listDP:Array;

in mxml code

listsrc.dataProvider = listDP;

in actionScript whenever you are getting it from the server

listDP = srv.getTerritories.send();

By doing it this way you don't have to have your control instantiated before requesting data from the server.