为什么会提示 错误

nanhaixing

[C#] 纯文本查看 复制代码

namespace DotNet.Utilities
{
    public class CookieHelper
    {
        /// <summary>
        /// 清除指定Cookie
        /// </summary>
        /// <param name="cookiename">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);
            }
        }

[C#] 纯文本查看 复制代码

    HttpCookie cookie = HttpContext.Current.Request.Cookies[cookiename];   

   未将对象引用设置到对象的实例    求解释！

站长苏飞

那说明这个Cookie不存在吧，或者是HttpContext.Current.Request对象不存在，你是在WEb里调用的还是CS调用  的，这个只能在Web程序下使用