#region 保存用户名的Cookie/// <summary>/// 设置Cookie/// </summary>/// <param name="cookieName"></param>/// <param name="key"></param>/// <param name="value"></param>/// <param name="expires"></param>/// <returns></returns>public HttpCookie SetCookie(string cookieName, string key, string value, DateTime? expires){HttpResponse response = System.Web.HttpContext.Current.Response;if (response != null){HttpCookie cookie = response.Cookies[cookieName];if (cookie != null){if (!string.IsNullOrEmpty(key) && cookie.HasKeys)cookie.Values.Set(key, value);elseif (!string.IsNullOrEmpty(value))cookie.Value = value;if (expires != null)cookie.Expires = expires.Value;response.SetCookie(cookie);}return cookie;}else{return null;}}/// <summary> /// 获得Cookie /// </summary> /// <param name="cookieName"></param> /// <returns></returns> public HttpCookie GetCookie(string cookieName){bool isReusable = HttpContext.CurrentHandler.IsReusable;HttpRequest request = System.Web.HttpContext.Current.Request;if (request != null)return request.Cookies[cookieName];return null;}/// <summary>/// 删除Cookies/// </summary>/// <param name="cookieName"></param>/// <param name="key"></param>public static void RemoveCookie(string cookieName, string key){HttpResponse response = System.Web.HttpContext.Current.Response;if (response != null){HttpCookie cookie = response.Cookies[cookieName];if (cookie != null){if (!string.IsNullOrEmpty(key))cookie.Values.Remove(key);elseresponse.Cookies.Remove(cookieName);}}}#endregion