Operation of. NET Cookies

usingSystem;usingSystem.Collections.Generic;usingsystem.web;namespacezhong.core{/// <summary>    ///Cookie Operation class/// </summary>     Public classCookiehelper {Private Static ReadOnly stringCookieName ="Zhong"; /// <summary>        ///Set Cookies/// </summary>        /// <param name= "name" >name</param>        /// <param name= "values" >key/value pairs</param>        /// <param name= "Expires" >Expiration Time-out (seconds), 0 does not set expiration</param>        /// <param name= "domain" >Domain name</param>        /// <param name= "path" >Path</param>         Public Static voidSetcookie (stringName, dictionary<string,string> Values,intExpiresstringDomain =NULL,stringPath =NULL) {HttpCookie cookie=Httpcontext.current.response.cookies[name]; if(Cookie = =NULL) {Cookie=NewHttpCookie (name); }            foreach(keyvaluepair<string,string> KVinchvalues) {cookie. Values.add (KV. Key, KV.            Value); }            if(Domain! =NULL) {cookie. Domain=domain; }            if(Path! =NULL) {cookie. Path=path; }            if(Expires! =0) {cookie. Expires= DateTime.Now.AddSeconds (expires);//Expiry Time} HttpContext.Current.Response.Cookies.Add (cookie); }        /// <summary>        ///Set Cookies/// </summary>        /// <param name= "key" >Key</param>        /// <param name= "value" >value</param>         Public Static voidSetcookie (stringKeystringvalue) {Setcookie (CookieName,Newdictionary<string,string> {key, Value}},0); }        /// <summary>        ///read cookies by name and key/// </summary>        /// <param name= "name" >name</param>        /// <param name= "key" >Key</param>        /// <returns></returns>         Public Static stringGetCookie (stringNamestringkey) {            stringReturnVal =NULL; HttpCookie Cookies=Httpcontext.current.request.cookies[name]; if(Cookie! =NULL) {ReturnVal=Cookie[key]; }            returnReturnVal; }        /// <summary>        ///read cookies by key/// </summary>        /// <param name= "key" >Key</param>        /// <returns></returns>         Public Static stringGetCookie (stringkey) {            returnGetCookie (CookieName, key); }        /// <summary>        ///get a cookie by name/// </summary>        /// <param name= "name" >name</param>        /// <returns></returns>         Public Static stringGetcookiebyname (stringname) {            stringReturnVal =NULL; HttpCookie Cookies=Httpcontext.current.request.cookies[name]; if(cookie!=NULL) {ReturnVal=cookies.            Value; }            returnReturnVal; }        /// <summary>        ///Delete Cookies/// </summary>        /// <param name= "name" >name</param>         Public Static voidDeletecookie (stringname) {HttpCookie Cookie=Httpcontext.current.response.cookies[name]; if(Cookie! =NULL) {cookie. Expires= DateTime.Now.AddYears (-1); Cookies.            Values.clear ();        } HttpContext.Current.Response.Cookies.Add (cookie); }    }}

Operation of. NET Cookies