Ajax Source Code

Ajax Example, source code file Default.aspx

<%@ Page Language="C#" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
    <title>Hello, world!</title>
</head>
<body>
    <form id="form1" runat="server">
        <asp:ScriptManager ID="MainScriptManager" runat="server"
            enablepartialrendering="true" />
        <asp:UpdatePanel ID="pnlHelloWorld" runat="server">
            <ContentTemplate>
                <asp:Label runat="server" ID="lblHelloWorld" 
                    Text="Click the button!" />
                <br /><br />
                <asp:Button runat="server" ID="btnHelloWorld" 
                    OnClick="btnHelloWorld_Click" Text="Update label!" />
            </ContentTemplate>
        </asp:UpdatePanel>
    </form>
</body>
</html>