webBrowser1打开连接不弹出到新窗口

private void webBrowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
{
//将所有的链接的目标，指向本窗体
foreach (HtmlElement archor in this.webBrowser1.Document.Links)
{
     archor.SetAttribute("target", "_self");
}
//将所有的FORM的提交目标，指向本窗体
foreach (HtmlElement form in this.webBrowser1.Document.Forms)
{
    form.SetAttribute("target", "_self");
}
}
private void webBrowser1_NewWindow(object sender, CancelEventArgs e)
{
   e.Cancel = true;
}
WebBrowser1.AllowWebBrowserDrop=false;
WebBrowser1.WebBrowserShortcutsEnabled=false;
WebBrowser1.IsWebBrowserContextMenuEnabled=false