Load child nodes every time from database

[Harpreet]

Hi Team,

I have a requirement that to load child data from database every time i clicked on expand icon but right now its only load data on first time of expand button but I need it on every click.

 

[Aleksandar]

Hello Harpreet,

To achieve the desired result you can attach an event handler function to the collapse event.

.Events(ev=>ev.Collapse("onCollapse"))

In the handler function get a reference to the collapsed dataItem and set its loaded flag to false. This way the next time the expand icon is clicked a request to the remote endpoint will be made:

function onCollapse(e){
              	var dataItem = e.sender.dataItem(e.node);
                dataItem.loaded(false);
              }

This is a sample dojo demonstrating the above approach.

Regards,
Aleksandar
Progress Telerik

[Harpreet]

Thank You So Much Aleksandar.