tk2dButton.UpdateSpriteIds C# (CSharp) Method

    public void UpdateSpriteIds()
    {
        buttonDownSpriteId 		= (buttonDownSprite.Length > 0)?sprite.GetSpriteIdByName(buttonDownSprite):-1;
        buttonUpSpriteId 		= (buttonUpSprite.Length > 0)?sprite.GetSpriteIdByName(buttonUpSprite):-1;
        buttonPressedSpriteId 	= (buttonPressedSprite.Length > 0)?sprite.GetSpriteIdByName(buttonPressedSprite):-1;
    }