The RadDiagram control does not support automatic updates of its data source when changes are made to the diagram.
Nevertheless, you could manually go through the entries in the DataSource and in the ConnectionDataSource of the diagram and if there is a change to update the actual data sources.
It is also possible to use the export/import feature of the diagram to save its state, because this way it will be easier to retrieve the changes in the diagram data: http://demos.telerik.com/aspnet-ajax/diagram/examples/saveload/defaultcs.aspx
In your post you mentioned that you are using RadClientDataSource to get data from
an SQL Server database
. The RadClientDataSource is designed for
data binding to web services, so please clarify if I have misunderstood your case.
Check out the Telerik Platform - the only platform that combines a rich set of UI tools with powerful cloud services to develop web, hybrid and native mobile apps.