Thank you for posting in the community.It seems your code attachment is missing.
Please notice the product version you are using is no longer shipped and supported as it is considered retired.
Reference to the product LifeCycle page: https://www.infragistics.com/support/product-lifecycle
I strongly suggest you to upgrade to more modern product version and take advantage of the up-to-date architecture and support in modern browsers.
Here is an online sample illustrating the use of Ajax Indicator for our Aikido Controls https://www.infragistics.com/samples/aspnet/data-tree/ajax-indicator
Regarding your particular asking here is an example of implementation of such loading indication "How to a Progress Indicator During DemandLoad Of The UltraWebTree":
Declare InitializeTree and DemandLoad event handlers in the ClientSideEvents of the UltraWebTree.
<ClientSideEvents InitializeTree="func_initializeTree" DemandLoad="func_demandLoad" />
The DemandLoad event handler will respond when the user click on a node and process an ajax postback to retrieve thechild nodes. In this handler you can display any progress indicator message.
The InitializeTree event handler will act like the callback, this is assumed because the UltraWebTree does not have any AfterDemandLoad event. In this handler you can hide the progress indicator message.
var _currentNodeId = '';
var _currentNodeText = '';
tree = igtree_getTreeById(treeId);
if(_currentNodeId.length > 0 && _currentNodeText.length > 0)
var node = igtree_getNodeById(_currentNodeId);
_currentNodeId = '';
_currentNodeText = '';
function func_demandLoad(treeId, nodeId)
var tree = igtree_getTreeById(treeId);
var node = igtree_getNodeById(nodeId);
_currentNodeId = nodeId;
_currentNodeText = node.getText();
node.setText(_currentNodeText + ' [Loading...]');
I have tried this but niether demandLoad function is called nor the loading text or image is shown. when i expand the tree node only InitializeTree event is called.Is there anything i am missing??
I suggest you try to find a solution trough the forum threads, as this controls are no longer supported (from around 3 years actually). I believe you may find a resolution to your asking in the forum threads disused at the time this control was used.
Again a reference to the product LifeCycle page: https://www.infragistics.com/support/product-lifecycle