Reloads data in the data sources.
When the client data processing mode is used, Web Dashboard caches data on the server side to improve data loading performance. When you call the ReloadData method on the client side, a callback is sent to the server. The server-side's cache for all data sources is reset and all dashboard items request new data from data sources.
Since multiple users can simultaneously open the dashboard and share the same server-side cache, execution of the reloadData method by one of the clients forces the server cache to be reset. All users get new data on the next request to the server.