c#中cookies的存取操作

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在用戶端建立一個username的cookies,其值為gjy,有效期間為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);

建立帶有子鍵的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的讀取:

無子鍵讀取:
if(Request.Cookies["username"]!=null)
{
Response.Write(Server.HtmlEncode(Request.Cookies["username"].Value));
}

有子鍵讀取:
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賦值
/// </summary>
/// <param name="strName">主鍵</param>
/// <param name="strValue">索引值</param>
/// <param name="strDay">有效天數</param>
/// <returns></returns>
public bool setCookie(string strName, string strValue, int strDay)
{
try
{
HttpCookie Cookie = new HttpCookie(strName);
//Cookie.Domain = ".xxx.com";//當要跨網域名稱訪問的時候,給cookie指定網域名稱即可,格式為.xxx.com
Cookie.Expires = DateTime.Now.AddDays(strDay);
Cookie.Value = strValue;
System.Web.HttpContext.Current.Response.Cookies.Add(Cookie);
return true;
}
catch
{
return false;
}
}

    /// <summary>
/// 讀取Cookies
/// </summary>
/// <param name="strName">主鍵</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>
/// 刪除Cookies
/// </summary>
/// <param name="strName">主鍵</param>
/// <returns></returns>
public bool delCookie(string strName)
{
try
{
HttpCookie Cookie = new HttpCookie(strName);
//Cookie.Domain = ".xxx.com";//當要跨網域名稱訪問的時候,給cookie指定網域名稱即可,格式為.xxx.com
Cookie.Expires = DateTime.Now.AddDays(-1);
System.Web.HttpContext.Current.Response.Cookies.Add(Cookie);
return true;
}
catch
{
return false;
}
}
}

樣本：
Cookie Cookie = new Cookie();
Cookie.setCookie("name", "aaa",1);//賦值
Cookie.getCookie("name");//取值
Cookie.delCookie("name");//刪除
注意:當Cookie存中文出現亂碼,則在存放時給中文編碼,如Cookie.setCookie("name",Server.UrlEncode("aaa"),1),讀取時解碼即可

另外：只要不給cookie設定到期時間,cookie在瀏覽器關閉的時候自動失效

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賦值
/// </summary>
/// <param name="strName">主鍵</param>
/// <param name="strValue">索引值</param>
/// <param name="strDay">有效天數</param>
/// <returns></returns>
public bool setCookie(string strName, string strValue, int strDay)
{
try
{
HttpCookie Cookie = new HttpCookie(strName);
//Cookie.Domain = ".xxx.com";//當要跨網域名稱訪問的時候,給cookie指定網域名稱即可,格式為.xxx.com
Cookie.Expires = DateTime.Now.AddDays(strDay);
Cookie.Value = strValue;
System.Web.HttpContext.Current.Response.Cookies.Add(Cookie);
return true;
}
catch
{
return false;
}
}

    /// <summary>
/// 讀取Cookies
/// </summary>
/// <param name="strName">主鍵</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>
/// 刪除Cookies
/// </summary>
/// <param name="strName">主鍵</param>
/// <returns></returns>
public bool delCookie(string strName)
{
try
{
HttpCookie Cookie = new HttpCookie(strName);
//Cookie.Domain = ".xxx.com";//當要跨網域名稱訪問的時候,給cookie指定網域名稱即可,格式為.xxx.com
Cookie.Expires = DateTime.Now.AddDays(-1);
System.Web.HttpContext.Current.Response.Cookies.Add(Cookie);
return true;
}
catch
{
return false;
}
}
}

樣本：
Cookie Cookie = new Cookie();
Cookie.setCookie("name", "aaa",1);//賦值
Cookie.getCookie("name");//取值
Cookie.delCookie("name");//刪除
注意:當Cookie存中文出現亂碼,則在存放時給中文編碼,如Cookie.setCookie("name",Server.UrlEncode("aaa"),1),讀取時解碼即可

另外：只要不給cookie設定到期時間,cookie在瀏覽器關閉的時候自動失效