Hi Thank you very much for your reply.
Is it possible to get some sample code for this? Thanks Amy-28 wrote: > > --- In flexcoders@yahoogroups.com, muruga <murugave...@...> wrote: >> >> >> Hi >> >> I have advanceddatagrid in which i am displaying the data in Tree > structure. >> Since the data is huge and it is taking lots of time to retrieve > from >> databse, we wanted build the tree dynamically. Means initially we > want to >> display the tree only will the parent nodes. Only when the user > expands the >> parent node, we need to build the children node of this parent node > (only >> when the user expands the parent node, we go to DB and retrieve the > children >> node details). Is it possible to do this with FLEX advanceddatagrid > tree >> structure. First i would like to know, is it feasible to do? if > yes, then >> how to do it. It is very urgent. > > I've done this, not with an AdvancedDatagrid, but with a > HierarchicalCollectionView, which is what an ADG dataProvider is. > Essentially, I called a service that gave me the top level of the > hierarchy. The objects that populate the HierarchicalCollectionView > each have a method that loads the children. > > I don't wait for the user to open the nodes. Instead, I start > loading the children in the background by calling this method as soon > as the top level is known. The child object will generate an event > when its children are loaded, and then the parent class (which has > the HierarchichalCollectionView as a property) will call the next > child in the line. > > If a user selects a child that has not loaded its children yet, when > the event fires that says the last child was loaded, I interrupt the > predictive load to load that one. This has been discussed recently > on here, and I think the person who was doing this type of load on a > Tree control had to do something once the load was complete to tell > the node to open. > > HTH; > > Amy > > > -- View this message in context: http://www.nabble.com/AdvancedDataGrid-Tree---Help-Required---Urgent-tp21254073p21293242.html Sent from the FlexCoders mailing list archive at Nabble.com.
