属性方法和单例模式

        string Age = "";
        PeopleInfo _Info;
        public PeopleInfo Info
        {
            get { return _Info; }
            set
            {
                _Info = value;
                if (_Info != null && _Info.CardNo != "")
                {
                    this.txt姓名.Text = _Info.Name;
                    this.txt性别.Text = _Info.Sex;
                    this.txt生日.Text = "";
                    this.txt身份证号.Text = _Info.CardNo;
                    this.txt地址.Text = "";
                    this.txt住院号.Text = _Info.ZYH;
                    Age = _Info.Age;
                    BinDingData();
                    myTabControl1.SelectedTab = tabPage病人基本信息;
                }
            }
        }

        private static UserControl病人信息 _ItSelf;
        public static UserControl病人信息 ItSelf
        {
            get
            {
                if (_ItSelf == null || _ItSelf.IsDisposed)
                {
                    _ItSelf = new UserControl病人信息();
                }
                return _ItSelf;
            }
        }