public void SaveContacts(string Name, string Number)
{
var activity = Forms.Context as Activity;
var intent = new Intent(Intent.ActionInsert);
intent.SetType(ContactsContract.Contacts.ContentType);
intent.PutExtra(ContactsContract.Intents.Insert.Name, Name);
intent.PutExtra(ContactsContract.Intents.Insert.Phone, Number);
activity.StartActivity(intent);
Toast.MakeText(activity, "ContactSaved", ToastLength.Short).Show();
}