C# WebBrowser 获取 HttpOnly 的 cookie

getcookies.cs

//不知道为什么有些 cookie 获取不到，只能通过这种方式解决
//这一次的用法是，先在 WebBrowser 登录贴吧网页版，然后将 http://tieba.baidu.com/mo/ 传给 GetCookie 方法
//就可以获取到所有 cookie
//需要引入 System.Net 并 using System.Net;

//下面这段代码作为内部类，如何使用在后面

internal static class CookieReader
{
    /// <summary>
    /// Enables the retrieval of cookies that are marked as "HTTPOnly". 
    /// Do not use this flag if you expose a scriptable interface, 
    /// because this has security implications. It is imperative that 
    /// you use this flag only if you can guarantee that you will never 
    /// expose the cookie to third-party code by way of an 
    /// extensibility mechanism you provide. 
    /// Version:  Requires Internet Explorer 8.0 or later.
    /// </summary>
    private const int INTERNET_COOKIE_HTTPONLY = 0x00002000;

    [DllImport("wininet.dll", SetLastError = true)]
    private static extern bool InternetGetCookieEx(
        string url,
        string cookieName,
        StringBuilder cookieData,
        ref int size,
        int flags,
        IntPtr pReserved);

    /// <summary>
    /// Returns cookie contents as a string
    /// </summary>
    /// <param name="url"></param>
    /// <returns></returns>
    public static string GetCookie(string url)
    {
        int size = 512;
        StringBuilder sb = new StringBuilder(size);
        if (!InternetGetCookieEx(url, null, sb, ref size, INTERNET_COOKIE_HTTPONLY, IntPtr.Zero))
        {
            if (size < 0)
            {
                return null;
            }
            sb = new StringBuilder(size);
            if (!InternetGetCookieEx(url, null, sb, ref size, INTERNET_COOKIE_HTTPONLY, IntPtr.Zero))
            {
                return null;
            }
        }
        return sb.ToString();
    }
}


//使用方法
private void webBrowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
{
    string cookie = webBrowser1.Document.Cookie;
    cookie = CookieReader.GetCookie("http://tieba.baidu.com/mo/");
    textBox1.Text = cookie;
}

这种方法是不是无法获取到httponly的cookie

这种方法是不是无法获取到httponly的cookie

不好意思，隔得时间有点久，我不记得细节了，但是我记得是可以获取到的。