c# 设置内存中的cookies

[DllImport("wininet.dll", SetLastError = true)]
public static extern bool InternetSetCookieEx(
    string url,
    string cookieName,
    StringBuilder cookieData,
    Int32 dwFlags,
    IntPtr lpReserved);

   1: public static void SetCookieForBrowserControl(CookieContainer cc, Uri uri)

   2: {

   3:     String hostName = uri.Scheme + Uri.SchemeDelimiter + uri.Host;

   4:     Uri hostUri = new Uri(hostName);

   5:     foreach (Cookie cookie in cc.GetCookies(hostUri))

   6:     {

   7:         InternetSetCookieEx(hostName, cookie.Name, new StringBuilder(cookie.Value), 0, IntPtr.Zero);

   8:     }