winForm获得cookie经过

winForm获得cookie经过
一天的时间几乎崩溃
Webservice--失败
WebRequest--失败
WebBrowser--成功
注意：用WebBrowser时，需要等待加载完成！即webBrowser1_DocumentCompleted

public partial class Form1 : Form
{
private String url;
public Form1()
{
InitializeComponent();
this.url = "http://passport.sinobase-vip.com/gettokenbycookie.aspx";
webBrowser1.Navigate(url);
}
private void webBrowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
{
CookieContainer myCookieContainer = new CookieContainer();
//String 的Cookie　要转成　Cookie型的　并放入CookieContainer中
string cookieStr = webBrowser1.Document.Cookie;
string[] cookstr = cookieStr.Split(';');
txtCookie.Text = cookstr[0].ToString().Replace("Token=Value=", "");
}
}