C#自动登录问题请大家帮忙

Question

如题，我想作自动登录，请高手们帮忙，写的越详细越好，谢谢大家（其实就是怎么保存cookies，再次访问时该怎么读取）

Answer 1

给你一段代码login.aspx.csstring userId = 111;
Session["userId"] = userId;
WriteCookie("__MyCookieName", "__MyCookieKey", userId.ToString(), DateTime.Now.AddDays(1));
Response.Redirect("xxx.aspx");
xxx.aspx.cs
string userId;
object o = Session["userId"];
if(o != null)
  userId = (int)o;
else
{
  string sUserId = ReadCookie("__MyCookieName","__MyCookieKey");
  if(string.IsNullOrEmpty(sUserId))
   throw new Exception("login timeout");
  else
    userId = int.parse(sUserId);
}
Response.Write(userId);2函数
public string ReadCookie(string cookieName, string cookieKey)
        {
            try
            {
                HttpCookie _cookie = Request.Cookies[cookieName];
                if (_cookie == null)
                    return "";
                return _cookie[cookieKey];
            }
            catch { return ""; }
        }        public void WriteCookie(string cookieName, string cookieKey, string cookieValue, DateTime expire)
        {
            try
            {
                HttpCookie _cookie = HttpContext.Current.Request.Cookies[cookieName];
                if (_cookie == null)
                    _cookie = new HttpCookie(cookieName);
                _cookie[cookieKey] = cookieValue;
                _cookie.Expires = expire;
                HttpContext.Current.Response.AppendCookie(_cookie);
            }
            catch { }
        }随手写的,错误自己修改