求助2 高分酬谢

Question

在你的Project中的References有没有把你需要用dll文件加进去如果没有则 点References右键，Add Referencesusing System; ---》需要System.dll;
using System.Data---》需要System.Data.dll;
............

Answer 1

Session["logintime"] = System.DateTime.Now;
Session["nameid"] =Name.Text;
DateTime maptime=System.DateTime.Now;
String time=DateTime.Now.ToString();
HttpCookie objCookietime=new HttpCookie("logintime",maptime);
Response.Cookies.Add(objCookietime);
Response.Redirect("loginsuccess.aspx");

Answer 2

cookie在你调用的时候已经过期
设置cookie的Expires属性即可

Answer 3

代码：
HttpCookie objCookietime=new HttpCookie("logintime",maptime);
objCookietime.Expires=DateTime.Today.AddYears(10);
Response.Cookies.Add(objCookietime);

Answer 4

DateTime maptime=System.DateTime.Now;
String time=DateTime.Now.ToString();
HttpCookie objCookietime=new HttpCookie("logintime",time);
objCookietime.Expires=DateTime.Today.AddYears(10);
Response.Cookies.Add(objCookietime);

Answer 5

DateTime maptime=System.DateTime.Now;
String time=DateTime.Now.ToString();
HttpCookie objCookietime=new HttpCookie("logintime",time);
objCookietime.Expires=DateTime.Today.AddYears(10);
Response.Cookies.Add(objCookietime);