Ajax ASP.Net Tutorial

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  4. Specifying UpdatePanel Triggers
<%@ Page Language="C#" %>
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">


    Trigger Update Panel


    
    

            id="sm1"
        Runat="server" />
    Page Time: <%= DateTime.Now.ToString("T") %>
    
            id="btnUpdate"
        Text="Update"
        Runat="server" />
            id="up1"
        Runat="server">
        
                            ControlID="btnUpdate"
                EventName="Click" />
        
        
        Update Panel Time: <%= DateTime.Now.ToString("T") %>