Populate Kendo TreeView from Kendo Grid Data - kendo-ui

Question

I have both TreeView and Grid on the same page and I need to populate the TreeView from the grid data. So the flow is like this:
User selects a something from a dropdown and clicks on a button -> web service call -> populate the grid with data from web service -> populate TreeView with some massage of the grid data
The logic to populate TreeView is currently in the grid.dataSource.fetch() method like this:
// this function is called when user clicks on the button
function getData() {
grid.dataSource.read();
grid.dataSource.page(1);
grid.dataSource.fetch(function () {
var data = this.data();
... // logic to massage the data to populate TreeView
...
}
}
However, if the user selects another thing from the dropdown and clicks on the button again, this.data() seems to have the old data (fromt the 1st time), as a result, TreeView is populated with old data.
Which is the right event/method other than fetch() I should use to put my logic in?

Answer 1

I think you should use kendoGrid's dataBound event.
http://docs.kendoui.com/api/web/grid#events-dataBound.
Here is the sample code for kendoGrid dataBound event handler:
function Grid_DataBound(e) {
console.log("Grid_DataBound", e);
var grid = e.sender;
var dataItems = grid.dataSource.view();
console.log(dataItems);
var treeData = new Array();
for (var i = 0; i < dataItems.length; i++) {
treeData.push({
OrderId: dataItems[i].OrderID,
ShipName: dataItems[i].ShipName
});
}
var dataSource = new kendo.data.HierarchicalDataSource({
data: treeData,
schema: {
model: {
id: "OrderId"
}
}
});
$("#treeview").data("kendoTreeView").setDataSource(dataSource);
}
Let me know if you need full sample code.