C# - Encountering Error When Doing Post - Back Using __doPostBack()

Oct 29, 2010

I am getting an error on javascript when doing post back. The code is as follows:

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="test.aspx.cs" Inherits="test" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" [URL]>
<html xmlns=[URL]>
<head id="Head1" runat="server">
<title>Untitled Page</title>
<script language="javascript" type="text/javascript">
function DoPostBack()
{
__doPostBack('Button2','My Argument');
}
</script>
</head>
<body>
<form id="form1" runat="server">
<input type="button" id="Button2" value="Press me" onclick="DoPostBack()" />
</form>
</body>
</html>

I am getting the following error: Line: 13 Error: Object expected I can't understand why this error is coming.

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