c# 取sessionid
WebBrowser web = new WebBrowser();
web.Navigate(url);
上面两行打开网址后该怎样取sessionid。
（取cookie也行，里面也保存了sessionid）

（我对网页操作不在行哦）是winform

[解决办法]
CookieContainer myCookieContainer = new CookieContainer();
string cookieStr = webBrowser1.Document.Cookie;
string[] cookstr = cookieStr.Split( '; ');
foreach (string str in cookstr)
{
string[] cookieNameValue = str.Split('=');
Cookie ck = new Cookie(cookieNameValue[0].Trim().ToString(), cookieNameValue[1].Trim().ToString());
ck.Domain = "";
myCookieContainer.Add(ck);
}