Code ScriptManager Generate
<pre data-sub="prettyprint:_">
<!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><title>
Untitled Page
</title></head>
<body>
<form name="form1" method="post" action="basic1.aspx" id="form1">
<div>
<input type="hidden" name="__EVENTTARGET" id="__EVENTTARGET" value="" />
<input type="hidden" name="__EVENTARGUMENT" id="__EVENTARGUMENT" value="" />
<input type="hidden" name="__VIEWSTATE" id="__VIEWSTATE" value="/wEPDwUKMjA1NzA5MTkxMGRkz95fx4KusTmYEx/xhsDLGMdc298=" />
</div>
<script type="text/javascript">
<!--
var theForm = document.forms['form1'];
if (!theForm) {
theForm = document.form1;
}
function __doPostBack(eventTarget, eventArgument) {
if (!theForm.onsubmit || (theForm.onsubmit() != false)) {
theForm.__EVENTTARGET.value = eventTarget;
theForm.__EVENTARGUMENT.value = eventArgument;
theForm.submit();
}
}
// -->
</script>
<!-- WebForm_PostBackOptions -->
<script src="/TestAspAjax/WebResource.axd?d=bWpynBPoLwUxzToR_vfUaA2&t=633227914388571540" type="text/javascript"></script>
<!-- MicrosoftAjax.js below -->
<script src="/TestAspAjax/ScriptResource.axd?d=cMBhuqB9iunySX72-C5q7pdVqEMd84sSiJqDdGEHnKylTf7X1dVOSKczo0448f_rwrYln5b-BH2Rb6f7ZO3tAUPvU7L2wmXGsM7UJx9LojE1&t=633112014957720327" type="text/javascript">
</script>
<!-- MicrosoftAjaxWebForms.js below-->
<script src="/TestAspAjax/ScriptResource.axd?d=cMBhuqB9iunySX72-C5q7pdVqEMd84sSiJqDdGEHnKylTf7X1dVOSKczo0448f_rwrYln5b-BH2Rb6f7ZO3tAX5Ot2CjJ_RAfTZ5cGe3YmN0GLNbM5NViLT0CKCOgoVM0&t=633112014957720327" type="text/javascript"></script>
<div>
<script type="text/javascript">
//<![CDATA[
Sys.WebForms.PageRequestManager._initialize('sm', document.getElementById('form1'));
//if you have update pannel with id up1, you will see
// Sys.WebForms.PageRequestManager.getInstance()._updateControls(['tup1'], [], [], 90);
Sys.WebForms.PageRequestManager.getInstance()._updateControls([], [], [], 90);
//]]>
</script>
</div>
<script type="text/javascript">
<!--
Sys.Application.initialize();
// -->
</script>
</form>
</body>
</html>
</pre>