class BStuInfo<T>
        {
            public T ID; //宣告學生編號欄位
            public T Name; //宣告姓名欄位
            public T Sex; //宣告性別欄位
            public T Age; //宣告年齡欄位
            public T Birthday; //宣告生日欄位
            public T Grade; //宣告班級欄位
        }
        class HStuInfo<T>:BStuInfo<T> //繼承自BStuInfo泛型類
        {
            public T Chinese; //宣告語文成績欄位
            public T Math; //宣告數學成績欄位
            public T English; //宣告英語成績欄位
        }

        private void button1_Click(object sender, EventArgs e)
        {
            HStuInfo<string> hstuinfo = new HStuInfo<string>();
            hstuinfo.ID = "1";
            hstuinfo.Name = "小王";
            hstuinfo.Sex = "男";
            hstuinfo.Age = "16";
            hstuinfo.Birthday = "1993/11/29 0:00:00";
            hstuinfo.Grade = "三年五班";
            hstuinfo.Chinese = "145";
            hstuinfo.Math = "140";
            hstuinfo.English = "137";

            tbID.Text = hstuinfo.ID;
            tbName.Text = hstuinfo.Name;
            tbSex.Text = hstuinfo.Sex;
            tbAge.Text = hstuinfo.Age;
            tbBirthday.Text = hstuinfo.Birthday;
            tbGrade.Text = hstuinfo.Grade;
            tbChinese.Text = hstuinfo.Chinese;
            tbMath.Text = hstuinfo.Math;
            tbEnglish.Text = hstuinfo.English;
<pre name="code" class="csharp">      tbEnglish.Text = hstuinfo.English;
        }