How can get xamarin.Android value in PCL

I Created a custom map in xamarin android and implement map move event

private async void NativeMap_CameraIdle(object sender, EventArgs e)
{
    var LatLng = NativeMap.CameraPosition.Target;
    var address = await Geocode.GetAddress(LatLng.Latitude.ToString(), LatLng.Longitude.ToString(), "en");
    string add = address.FormattedAddress;
    string con = address.Country;
}

this method every time when i move map and getting address

string add= address.FormattedAddress;
string con = address.Country;

i want to value add and con in label text and reflect label text every time when move map, how can fix this