// define menu in xml

<?xml version="1.0" encoding="utf-8"?>

<menu xmlns:android="http://schemas.android.com/apk/res/android">

<item android:id="@+id/new_game"

android:icon="@drawable/ic_new_game"

android:title="@string/new_game"

android:showAsAction="ifRoom"/>

</menu>

//show actions options

showAsAction="always"

showAsAction="ifRoom"

showAsAction=“never”

// create menu

public override bool OnCreateOptionsMenu(IMenu menu)

{

MenuInflater.Inflate(Resource.Menu.main_menu, menu);

return base.OnCreateOptionsMenu(menu);

}

//select from menu

public override bool OnOptionsItemSelected(IMenuItem item)

{

switch (item.ItemId)

{

case Resource.Id.new_game:

//do something

return true;

}

return base.OnOptionsItemSelected(item);

}