public void ShowDeleteUserAlert()
{
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.SetMessage(Resource.String.areYouSure);
builder.SetPositiveButton(Resource.String.yes, (sender, args) => { _presenter.DeleteUser(); });
builder.SetNegativeButton(Resource.String.no, (sender, args) => { });
builder.Create().Show();
}