安全验证

 //Todo
                //FormsAuthentication.RedirectFromLoginPage(UserName.Text, RememberMe.Checked);

                string userDatastring = Companies[i] + "|" + TitleatCompany[i];
                HttpCookie authCookie = FormsAuthentication.GetAuthCookie(UserName.Text, RememberMe.Checked);
                FormsAuthenticationTicket ticket = FormsAuthentication.Decrypt(authCookie.Value);
                FormsAuthenticationTicket newTicket = new FormsAuthenticationTicket(ticket.Version, ticket.Name, ticket.IssueDate, ticket.Expiration, ticket.IsPersistent, userDatastring);
                authCookie.Value = FormsAuthentication.Encrypt(newTicket);
                Response.Cookies.Add(authCookie);
                string Url = FormsAuthentication.GetRedirectUrl(UserName.Text, RememberMe.Checked);
                Response.Redirect(Url);

web.config

<location path="Admin">
    <system.web>
      <authorization>
        <deny users="?" />
      </authorization>
    </system.web>
  </location>
  <system.web>
    <pages enableEventValidation="true" />
    <customErrors mode="On" defaultRedirect="Err.aspx">
    </customErrors>
    <compilation debug="true" />
    <globalization requestEncoding="gb2312" responseEncoding="gb2312" />
    <authentication mode="Forms">
      <forms name="Kenvicookies" loginUrl="Login.aspx" />
    </authentication>