Could you, please, be a bit more specific about the DataTable that you intend to store the id's in?
For example, what does MenuId stands for? Probably it will be better if you can explain in a bit more detail, what exactly is the scenario that you try to implement.
Hope that soon we will solve this problem!
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