asp.net-mvc – Cookie不会被删除

我使用以下代码在我的asp.net mvc(C#)应用程序中设置一个cookie：

public static void SetValue(string key,string value,DateTime expires)
{
    var httpContext = new HttpContextWrapper(HttpContext.Current);
    _request = httpContext.Request;
    _response = httpContext.Response;

    HttpCookie cookie = new HttpCookie(key,value) { Expires = expires };
    _response.Cookies.Set(cookie);
}

我需要在用户点击注销时删除Cookie。设置的Cookie不是使用清除/删除删除/删除。代码如下：

public static void Clear()
{
    var httpContext = new HttpContextWrapper(HttpContext.Current);
    _request = httpContext.Request;
    _response = httpContext.Response;

    _request.Cookies.Clear();
    _response.Cookies.Clear();
}

public static void Remove(string key)
{
    var httpContext = new HttpContextWrapper(HttpContext.Current);
    _request = httpContext.Request;
    _response = httpContext.Response;

    if (_request.Cookies[key] != null)
    {
        _request.Cookies.Remove(key);
    }
    if (_response.Cookies[key] != null)
    {
        _response.Cookies.Remove(key);
    }
}

我已经尝试了两个以上的功能，但仍然cookie存在，当我尝试检查存在。

public static bool Exists(string key)
{
    var httpContext = new HttpContextWrapper(HttpContext.Current);
    _request = httpContext.Request;
    _response = httpContext.Response;
    return _request.Cookies[key] != null;
}

这里可能有什么问题？或什么，我需要做的事情删除/删除cookie？

解决方法

public static void Clear(string key)
{
    var httpContext = new HttpContextWrapper(HttpContext.Current);
    _response = httpContext.Response;

    HttpCookie cookie = new HttpCookie(key) 
        { 
            Expires = DateTime.Now.AddDays(-1) // or any other time in the past
        };
    _response.Cookies.Set(cookie);
}

（编辑：安卓应用网）

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