<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="ICallBackEventHandlerSample._Default" %>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 runat="server"> <title>ICallbackEventHandlertitle> <script language="javascript" type="text/javascript"> function GetResult(returnValue, context) { document.getElementById("txtDateTime").value = returnValue; } function Request() { ...