private void AdminEntry_Click(object sender, RoutedEventArgs e) { HyperlinkButton button = sender as HyperlinkButton; System.Windows.Browser.HtmlPage.Window.Navigate(new Uri((string)button.Tag, UriKind.Absolute), "_blank", ""); }
关键是参数设置为"_blank"，带下划线
原文：http://www.cnblogs.com/xlyg-14/p/4883456.html