comboBox綁定數據源

        private void button3_Click(object sender, EventArgs e)
        {
            DataTable dt = new DataTable();
            dt.Columns.Add("id", System.Type.GetType("System.Int32"));
            dt.Columns.Add("name", System.Type.GetType("System.String"));
            DataRow dr;
            dr = dt.NewRow();
            dr["id"] = 1;
            dr["name"] = "ADOINKLHOER";
            dt.Rows.Add(dr);
            dr = dt.NewRow();
            dr["id"] = 3;
            dr["name"] = "LKJOHIBEREW";
            dt.Rows.Add(dr);
            dr = dt.NewRow();
            dr["id"] = 4;
            dr["name"] = "VCBTRWTVSDFG";
            dt.Rows.Add(dr);
            dr = dt.NewRow();
            comboBox1.ValueMember = "id";
            comboBox1.DisplayMember = "name";
            comboBox1.DataSource = dt;
        }

        private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
        {
            MessageBox.Show(comboBox1.SelectedValue.ToString() );
        }

        private void button4_Click(object sender, EventArgs e)
        {
            List<ss> list = new List<ss>();
            list.Add(new ss(1, "QSDFADASDF"));
            list.Add(new ss(4, "XCVBXCVBXCB"));
            list.Add(new ss(5, "RTYYTIUYO"));
            list.Add(new ss(9, "HKLHJNBVNB"));
            comboBox1.ValueMember = "id";
            comboBox1.DisplayMember = "name";
            comboBox1.DataSource = list;
        }
        class ss
        {
            public int id { get; set; }
            public string name { get; set; }
            public ss(int id, string name)
            {
                this.id = id;
                this.name = name;
            }
        }