ASP.Net/Session Cookie/Session Lock
Session lock (VB.net)
<%@ Page Language="vb" %>
<html>
<head>
<script runat="server">
Sub Page_Load()
Session("foo") = "foo"
SyncLock Session.SyncRoot
Message.Text = "in lock."
End SyncLock
End Sub
</script>
</head>
<body>
<asp:label id="Message" runat="server"/>
</body>
</html>