I can see you are using a gridview too. Does it display the new values? Can you please attach a runnable page (you can use a dummy datasource or an in-memory datatable), which reproduces it, so we can debug it and get back to you? Thanks.
the Telerik team
Do you want to have your say when we set our development plans?
Do you want to know when a feature you care about is added or when a bug fixed?
Telerik Public Issue Tracking
system and vote to affect the priority of the items.