Trigger in Ajax

Question

How can we use trigger in Ajax Updating panel control?

Satyapriya Nayak · Answer

Hi Deepak The tag has two childtags - the ContentTemplate and the Triggers tags. The ContentTemplate tag is required since it holds the content of the panel. The content can be anything that you would normally put on your page from literal text to web controls. The Triggers tag allows you to define certain triggers which will make the panel update it's content Ex:- @ Page Language =  C#  AutoEventWireup =  true  CodeFile =  Default.aspx.cs  Inherits =  _Default  %> DOCTYPE html PUBLIC -//W3C//DTD XHTML 1.1//EN http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd > html xmlns =http://www.w3.org/1999/xhtml > head runat =server > title > UpdatePanel title > head > body > form id =form1 runat =server > asp:ScriptManager ID =ScriptManager1 runat =server /> asp:UpdatePanel runat =server id =UpdatePanel updatemode =Conditional > Triggers > asp:AsyncPostBackTrigger controlid =UpdateButton2 eventname =Click /> Triggers > ContentTemplate > asp:Label runat =server id =DateTimeLabel1 /> asp:Button runat =server id =UpdateButton1 onclick =UpdateButton_Click text =Update /> ContentTemplate > asp:UpdatePanel > asp:UpdatePanel runat =server id =UpdatePanel1 updatemode =Conditional > ContentTemplate > asp:Label runat =server id =DateTimeLabel2 /> asp:Button runat =server id =UpdateButton2 onclick =UpdateButton_Click text =Update /> ContentTemplate > asp:UpdatePanel > form > body > html > protected void UpdateButton_Click( object sender EventArgs e) { DateTimeLabel1.Text = DateTime.Now.ToString(); DateTimeLabel2.Text = DateTime.Now.ToString(); } Thanks