wpf webbrowser取消js报错

 private void WebBrowser_Navigated(object sender, NavigationEventArgs e)
        {
            SuppressScriptErrors((WebBrowser)sender, true);
        }
        public void SuppressScriptErrors(WebBrowser wb, bool Hide)
        {
            FieldInfo fiComWebBrowser = typeof(WebBrowser).GetField("_axIWebBrowser2", BindingFlags.Instance | BindingFlags.NonPublic);
            if (fiComWebBrowser == null) return;

            object objComWebBrowser = fiComWebBrowser.GetValue(wb);
            if (objComWebBrowser == null) return;

            objComWebBrowser.GetType().InvokeMember("Silent", BindingFlags.SetProperty, null, objComWebBrowser, new object[] { Hide });
        }