asp.net Ajax Primer Series (11): Using the Timer control in multiple Updatepanle

This article will update the two UpdatePanel controls with the timer control, which will be placed outside the UpdatePanel control and configured as a UpdatePanel trigger, translated from the official document.

1. Add a new page and switch to Design view.

2. If the page does not contain a ScriptManager control, double-click the ScriptManager control in the Toolbox under the AJAX Extensions tab to add it to the page.

3. Double-click the Timer control to add to the Web page. The Timer control can act as a updatepanel trigger, regardless of whether it is in UpdatePanel.

4. Double-click the UpdatePanel control to add a panel to the page and set its UpdateMode property value to conditional.