callButton.Click += (object sender, EventArgs e) =>
{
  // On "Call" button click, try to dial phone number. sharejs.com
  var callDialog = new AlertDialog.Builder(this);
  callDialog.SetMessage("Call " + translatedNumber + "?");
  callDialog.SetNeutralButton("Call", delegate {
      // Create intent to dial phone
      var callIntent = new Intent(Intent.ActionCall);
      callIntent.SetData(Android.Net.Uri.Parse("tel:" + translatedNumber));
      StartActivity(callIntent);
    });
  callDialog.SetNegativeButton("Cancel", delegate { });
 
  // Show the alert dialog to the user and wait for response.
  callDialog.Show();
};