Request.Cookies讀取 Response.Cookies設定

--賦值
HttpCookie MyCookie = new HttpCookie("LastVisit");
DateTime now = DateTime.Now;

MyCookie.Value = now.ToString();
MyCookie.Expires = now.AddHours(1);

Response.Cookies.Add(MyCookie）；

      (多值)

 Response.Cookies["CookieName"]["cookie1"] = Value1;

Response.Cookies["CookieName"]["cookie2"] = Value2;

```

--讀取
Request.Cookies["LastVisit"]

     (多值)

HttpCookie cookie = Request.Cookies["CookieName"];

string S1= cookie .Value["cookie1"] ;

string S2= cookie .Value["cookie2"] ;

```

--修改

     (多值)

HttpCookie cookie = Request.Cookies["CookieName"];

 cookie .Value["cookie1"]=value3;

cookie .Value["cookie2"] =value4;

```

 Response.SetCookie(cookie );

清除cookie有兩種個方式：一個是在服務端清除，一個是在客戶端清除
服務端清除cookie：
1。Request.Cookies.Remove(name);//清除指定Cookie
2.Request.Cookies.Clear();//清除所有Cookie

客服端js操作cookie
//讀取cookies函式
function getCookie(name)      
{
    var arr = document.cookie.match(new RegExp("(^| )"+name+"=([^;]*)(;|$)"));
    if(arr != null) return unescape(arr[2]); return null;
}

//刪除cookie

function delCookie(name)
{
    var exp = new Date();
    exp.setTime(exp.getTime() - 1);
    var cval=NewGetCookie(name);
    if(cval!=null) document.cookie= name + "="+cval+";expires="+exp.toGMTString();
}

//新增Cookie
function setCookies(name,value)
{
    var Days = 30;
    var exp  = new Date();
    exp.setTime(exp.getTime() + Days*24*60*60*1000);
    document.cookie = name + "="+ escape (value) + ";expires=" + exp.toGMTString();
}