#region 获取选定的年
        private string strCboxYear;
        public  string StrCboxYear
        {
            get { return cboxYear.Text.Trim(); }
            set { strCboxYear= value; }
        }
        #endregion

        #region 获取选定的月份
        private string strCboxMonth;
        public string StrCboxMonth
        {
            get { return cboxMonth.Text.Trim(); }
            set { strCboxMonth = value; }
        }
        #endregion

        #region 获取选定的日期
        private string strCboxDay;
        public string StrCboxDay
        {
            get { return cboxDay.Text.Trim(); }
            set { strCboxDay = value; }
        }
        #endregion
        private void UserCbox_Load(object sender, EventArgs e)
        {

//自动获取下拉框的当前日期
//三个下拉框分别手工输入年、月、日 比如202年，12月，25日
            cboxYear.Text = DateTime.Now.Year.ToString().Trim ()+"年";
            cboxMonth.Text = DateTime.Now.Month.ToString().Trim() + "月";
            cboxDay.Text = DateTime.Now.Day.ToString().Trim() + "日";
        }

 private void button1_Click(object sender, EventArgs e)
        {
            label1.Text = userCbox1.StrCboxYear.ToString()+ userCbox1.StrCboxMonth.ToString()+ 
userCbox1.StrCboxDay.Trim();
        }