資料繫結技巧：資料表欄位繫結至 DropDownList

void Page_Load(object sender, System.EventArgs e)
{
    if(!IsPostBack)
    {
        string ConnStr = System.Configuration.ConfigurationSettings.AppSettings["ConnectionSqlServer"];
        string query = "SELECT * FROM Products";
        SqlCommand myCommand = new SqlCommand(query, new SqlConnection(ConnStr));
        SqlDataAdapter myAdapter = new SqlDataAdapter(myCommand);
        DataTable dt = new DataTable();
        myAdapter.Fill(dt);
        DropDownList1.DataSource = dt;
        DropDownList1.DataTextField = "ProductName";
        DropDownList1.DataValueField = "UnitPrice";
        DropDownList1.DataBind();
    }
}

來源：https://mjgforever.cnblogs.com/