Next issue - this one is very fustrating
My page works with some cascading combos and I have it all setup. It works fine on the first load. Then if I change one of the parent values the requestingitems event is raised and I alter the parameters as before of teh client data source but this time nothing happens. There is no http request (I see them on the initial call via fiddler)
This is my code that adds the custom parameters on the fly onto the datasource.
$find(dataSourceId).get_dataSourceObject().options.transport.read.url = $find(dataSourceId).get_dataSourceObject().options.transport.baseUrl + dataSourceUrl;