c#中cookies的存取操作

在客户端创建一个username的cookies,其值为gjy,有效期为1天.方法1:Response.Cookies["username"].Value="zxf";Response.Cookies["username"].Expires=DateTime.Now.AddDays(1);

方法2:System.Web.HttpCookie newcookie=new HttpCookie("username");newcookie.Value="gjy";newcookie.Expires=DateTime.Now.AddDays(1);Response.AppendCookie(newcookie);

创建带有子键的cookies:System.Web.HttpCookie newcookie=new HttpCookie("user");newcookie.Values["username"]="zxf";newcookie.Values["passWord"]="111";newcookie.Expires=DateTime.Now.AddDays(1);Response.AppendCookie(newcookie);

cookies的读取:

无子键读取:if(Request.Cookies["username"]!=null){Response.Write(Server.HtmlEncode(Request.Cookies["username"].Value));}

有子键读取:if(Request.Cookies["user"]!=null){Response.Write(Server.HtmlEncode(Request.Cookies["user"]["username"].Value));Response.Write(Server.HtmlEncode(Request.Cookies["user"]["password"].Value));

using System;using System.Data;using System.Configuration;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;

public class Cookie{/// <summary>/// Cookies赋值/// </summary>/// <param name="strName">主键</param>/// <param name="strValue">键值</param>/// <param name="strDay">有效天数</param>/// <returns></returns>public bool setCookie(string strName, string strValue, int strDay){try{HttpCookie Cookie = new HttpCookie(strName);//Cookie.Domain = ".xxx.com";//当要跨域名访问的时候,给cookie指定域名即可,格式为.xxx.comCookie.Expires = DateTime.Now.AddDays(strDay);Cookie.Value = strValue;System.Web.HttpContext.Current.Response.Cookies.Add(Cookie);return true;}catch{return false;}}

/// <summary>/// 读取Cookies/// </summary>/// <param name="strName">主键</param>/// <returns></returns>public string getCookie(string strName){HttpCookie Cookie = System.Web.HttpContext.Current.Request.Cookies[strName];if (Cookie != null){return Cookie.Value.ToString();}else{return null;}}

/// <summary>/// 删除Cookies/// </summary>/// <param name="strName">主键</param>/// <returns></returns>public bool delCookie(string strName){try{HttpCookie Cookie = new HttpCookie(strName);//Cookie.Domain = ".xxx.com";//当要跨域名访问的时候,给cookie指定域名即可,格式为.xxx.comCookie.Expires = DateTime.Now.AddDays(-1);System.Web.HttpContext.Current.Response.Cookies.Add(Cookie);return true;}catch{return false;}}}

示例：Cookie Cookie = new Cookie();Cookie.setCookie("name", "aaa",1);//赋值Cookie.getCookie("name");//取值Cookie.delCookie("name");//删除注意:当Cookie存中文出现乱码,则在存放时给中文编码,如Cookie.setCookie("name",Server.UrlEncode("aaa"),1),读取时解码即可

另外：只要不给cookie设置过期时间,cookie在浏览器关闭的时候自动失效

using System;using System.Data;using System.Configuration;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;

public class Cookie{/// <summary>/// Cookies赋值/// </summary>/// <param name="strName">主键</param>/// <param name="strValue">键值</param>/// <param name="strDay">有效天数</param>/// <returns></returns>public bool setCookie(string strName, string strValue, int strDay){try{HttpCookie Cookie = new HttpCookie(strName);//Cookie.Domain = ".xxx.com";//当要跨域名访问的时候,给cookie指定域名即可,格式为.xxx.comCookie.Expires = DateTime.Now.AddDays(strDay);Cookie.Value = strValue;System.Web.HttpContext.Current.Response.Cookies.Add(Cookie);return true;}catch{return false;}}

/// <summary>/// 读取Cookies/// </summary>/// <param name="strName">主键</param>/// <returns></returns>public string getCookie(string strName){HttpCookie Cookie = System.Web.HttpContext.Current.Request.Cookies[strName];if (Cookie != null){return Cookie.Value.ToString();}else{return null;}}

/// <summary>/// 删除Cookies/// </summary>/// <param name="strName">主键</param>/// <returns></returns>public bool delCookie(string strName){try{HttpCookie Cookie = new HttpCookie(strName);//Cookie.Domain = ".xxx.com";//当要跨域名访问的时候,给cookie指定域名即可,格式为.xxx.comCookie.Expires = DateTime.Now.AddDays(-1);System.Web.HttpContext.Current.Response.Cookies.Add(Cookie);return true;}catch{return false;}}}

示例：Cookie Cookie = new Cookie();Cookie.setCookie("name", "aaa",1);//赋值Cookie.getCookie("name");//取值Cookie.delCookie("name");//删除注意:当Cookie存中文出现乱码,则在存放时给中文编码,如Cookie.setCookie("name",Server.UrlEncode("aaa"),1),读取时解码即可

另外：只要不给cookie设置过期时间,cookie在浏览器关闭的时候自动失效