1>
<authentication mode="Forms">
<forms loginUrl="logon.aspx"></forms>
</authentication>
2>
<authorization>
<deny users="?" />
</authorization>
3>login.aspx.cs验证成功后:
System.Web.Security.FormsAuthentication.SetAuthCookie(strID,false);
4> 退出:
System.Web.Security.FormsAuthentication.SignOut();