// The client event 'NodeChecking' takes two parameters sender and e
// sender is the object which is raising the event
// e is the DataTreeSelectionEventArgs
function WebDataTree_CheckBoxSelectionChanged(sender, e) {
var str = "";
//Get thre newly selected tree nodes array
var newCheckedNodes = e.getNewCheckedNodes();
var countCheckedNodes = newCheckedNodes.length;
for (var i = 0; i < countCheckedNodes; i++) {
//Gets the text of the node at index i in the array
var nodeText = newCheckedNodes[i].get_text();
str = str + " " + nodeText;
}
window.status = "Newly Checked node :" + str;
}