Mega Code Archive
Working with the HiddenField server control (C#)
<![CDATA[
<%@ Page Language="C#"%>
<script runat="server">
protected void Page_Load(object sender, EventArgs e)
{
HiddenField1.Value = System.Guid.NewGuid().ToString();
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
<title>HiddenField Server Control</title>
</head>
<body>
<form id="form1" runat="server">
<asp:HiddenField ID="HiddenField1" Runat="Server" />
</form>
</body>
</html>
]]>