User Controls for redirecting, filtering and updating the filtering on a page should be designed so that the information is immediately updated as soon as the user has finished making all the selections.
Single selction field
For a single selection field, the information should be updated as soon as the user has made a selection. The user should immediately get a visual cue that the information is being updated.
In specific cases it is also possible to update only after the user has pressed a button to confirm the selection.
Multiple selection field
If the user can make several selections, these should be grouped in an information container and the information should be updated when the user clicks the button.