Wish to have a "reset" or "clear" method to restore a DataSource object to it's initial unpopulated state--specifically when used behind a search text box, and need to clear the datasource when the user removes all search text.
I attempted the proposed alternative. Stopping immediately before datasource.query({}) see data in datasource. Stopping immediately after, still see data in datasource.
Thank you for the proposal. This can be accomplished by passing an empty array of options to the query method (http://docs.telerik.com/kendo-ui/api/framework/datasource#methods-query) of the data source, i.e. dataSource.query({}). Thus its state will be reset an previous configuration options will be cleared. Having this as a solution, I'm closing this item.