编码 前进、后退 按钮状态

编码 前进、后退 按钮状态

 

        
        private int _current = 0;
        private int _min = 0;
        private int _max = 99;
        private void SetBtn_NextORPrevious_State()
        {
            btnNext.Enabled = btnPre.Enabled = true;

            if (_current == _min)
                btnPre.Enabled = false;

            if (_current == _max)
                btnNext.Enabled = false;
        }