I am converting one of the controls on our page, from being a RadComboBox to a RadDropDownTree, as the page (read control) is a filter page, the values are no populated until the user clicks on them. When a web service is called. This method just saves on processing and page size, for functionality that is rarely used
We have previously used OnClientItemsRequested (on the combo box) to pass client specific data to the webservice, however this doesn't appear to be possible on the DropDownTree, I've tried using OnClientDropDownOpening but this doesn't appear to have access to the context
function RequestingContractCategories(sender, eventArgs) {
var context = eventArgs.get_context();
var companyCode = $find(FilterCompanyId).get_value();
}
I note in all your examples that the webservice signature has a context, and ours when called has a value ... just 0 length, with no children