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Web如何使用cookie，MVC如何使用cookie
1、创建Cookies有两种方法：
Response.Cookies["userName"].Value = http://www.mamicode.com/"patrick";Response.Cookies["userName"].Expires = DateTime.Now.AddDays(1);HttpCookie aCookie = new HttpCookie("lastVisit");aCookie.Value =http://www.mamicode.com/ DateTime.Now.ToString();aCookie.Expires = DateTime.Now.AddDays(1);Response.Cookies.Add(aCookie);2、读取Cookie
if(Request.Cookies["userName"] != null) Label1.Text = Server.HtmlEncode(Request.Cookies["userName"].Value);if(Request.Cookies["userName"] != null){ HttpCookie aCookie = Request.Cookies["userName"]; Label1.Text = Server.HtmlEncode(aCookie.Value);}3、修改和删除Cookie
int counter;if (Request.Cookies["counter"] == null) counter = 0;else{ counter = int.Parse(Request.Cookies["counter"].Value);}counter++;Response.Cookies["counter"].Value =http://www.mamicode.com/ counter.ToString();Response.Cookies["counter"].Expires = DateTime.Now.AddDays(1);一定要注意设置Cookies是用Response读取是用Request两者不一样！
删除Cookie
string subkeyName;subkeyName = "userName";HttpCookie aCookie = Request.Cookies["userInfo"];aCookie.Values.Remove(subkeyName);aCookie.Expires = DateTime.Now.AddDays(1);Response.Cookies.Add(aCookie);
HttpCookie aCookie;string cookieName;int limit = Request.Cookies.Count;for (int i=0; i<limit; i++){ cookieName = Request.Cookies[i].Name; aCookie = new HttpCookie(cookieName); aCookie.Expires = DateTime.Now.AddDays(-1); Response.Cookies.Add(aCookie);}Web如何使用cookie，MVC如何使用cookie
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