While page load i have value in Request.ServerVariables["HTTP_REFERER"]
But select a address from address bar and hit the enter i got(Request.ServerVariables["HTTP_REFERER"] is null) null in FIREFOX.,BUt it's works fine in IE.
if (Request.ServerVariables["HTTP_REFERER"] == null && (Request.Cookies["CheckExport"] == null || ConfigurationFacade.Decrypt(Request.Cookies["CheckExport"]["PageName"].ToString()) != "UserManipulation"))
{
Session.Clear();
FormsAuthentication.SignOut();
FormsAuthentication.RedirectToLoginPage("Logout=true");
Response.Redirect("~/Default.aspx?Logout=true");
}
...
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