protected override void InitializePositiveAndNegativeButtons(AlertDialog.Builder builder)
{
builder.SetPositiveButton(DoneText, delegate { Done(); });
builder.SetNegativeButton(CancelText, delegate { });
}
protected override void OnPrepareDialogBuilder(AlertDialog.Builder builder)
{
base.OnPrepareDialogBuilder(builder);
builder.SetIcon(Resource.Drawable.Icon);
builder.SetPositiveButton("Google Wallet", pos_Click);
builder.SetNegativeButton("Pay Pal", neg_Click);
}