using System; using System.Web; namespace DotNet.Utilities { public class CookieHelper { /// <summary> /// 断根指定Cookie /// </summary> /// <param>cookiename</param> public static void ClearCookie(string cookiename) { HttpCookie cookie = HttpContext.Current.Request.Cookies[cookiename]; if (cookie != null) { cookie.Expires = DateTime.Now.AddYears(-3); HttpContext.Current.Response.Cookies.Add(cookie); } } /// <summary> /// 获取指定Cookie值 /// </summary> /// <param>cookiename</param> /// <returns></returns> public static string GetCookieValue(string cookiename) { HttpCookie cookie = HttpContext.Current.Request.Cookies[cookiename]; string str = string.Empty; if (cookie != null) { str = cookie.Value; } return str; } /// <summary> /// 添加一个Cookie（24小时过期） /// </summary> /// <param></param> /// <param></param> public static void SetCookie(string cookiename, string cookievalue) { SetCookie(cookiename, cookievalue, DateTime.Now.AddDays(1.0)); } /// <summary> /// 添加一个Cookie /// </summary> /// <param>cookie名</param> /// <param>cookie值</param> /// <param>过期时间 DateTime</param> public static void SetCookie(string cookiename, string cookievalue,DateTime expires) { HttpCookie cookie = new HttpCookie(cookiename) { Value = cookievalue, Expires = expires }; HttpContext.Current.Response.Cookies.Add(cookie); } } }
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