private void webBrowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
 {
 //將所有的連結的目標，指向本窗體 
foreach (HtmlElement archor in this.webBrowser1.Document.Links)
 { 
     archor.SetAttribute("target", "_self");
 } 
//將所有的FORM的提交目標，指向本窗體 
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