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 });
}