use FormsAuthentication.GetAuthCookie,HttpCookie cookie = FormsAuthentication.GetAuthCookie (UserName, false);

解决方案 »

  1.   

    sorry, I was wrong, you can just useHttpCookie authCookie = Request.Cookies[FormsAuthentication.FormsCookieName];
      

  2.   

    sorry...
    I could not get the username just follow: HttpCookie authCookie =Page.Request.Cookies[FormsAuthentication.FormsCookieName];
     Page.Response.Write(authCookie.Values[1].ToString());
     Page.Response.End();I just get this string:
    8097C115F66D32CA0145006400690074006F0072000000A01792D36C36C30101A057C2918D45FB0100002F000000