ASP.NET AJAX UpdatePanel Triggers

Hello everyone, I'm going to share to code sample for triggers in update panel using asp.net with c#

In the 1st step

code sample for .aspx view page

<asp:Content ID="BodyContent" runat="server" ContentPlaceHolderID="MainContent">

    <asp:ScriptManager EnablePartialRendering="true" ID="ScriptManager1" runat="server">

    </asp:ScriptManager>

    <asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional">

        <ContentTemplate>

            <asp:Label ID="Label1" runat="server"></asp:Label>

            <asp:Button ID="Button1" runat="server" Text="Click Me ?"

                onclick="Button1_Click"  />

        </ContentTemplate>

        <Triggers>

            <asp:AsyncPostBackTrigger ControlID="Button1" EventName="Click" />

        </Triggers>

    </asp:UpdatePanel>

</asp:Content>

In the 2nd step, 

code sample for .aspx.cs page

public partial class _Default : System.Web.UI.Page

{

        /// Button click event.

        protected void Button1_Click(object sender, EventArgs e)

        {

            String strDateTime = DateTime.Now.ToLongTimeString();

            Label1.Text = strDateTime;

        }
}

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