download link not work in webview

hi.

i us webview in my android app. and i load web page in webview.web page continio download link.but i Click in link is not work.

Programs written in Visual Studio 2013 and xamarin.android.

code webview :

w = FindViewById(Resource.Id.webView1);
w.Settings.LoadsImagesAutomatically = true;
w.Settings.JavaScriptEnabled = true;
w.SetWebViewClient(new mybrowser2());
w.LoadUrl("http://mypage");

// code for open page in webview
public class mybrowser2 : WebViewClient
{
public override bool ShouldOverrideUrlLoading(WebView view, string url)
{
view.LoadUrl(url);
return true;
}
}