ADO.NET数据服务 - 格式参数 - xml/json

using System;
using System.Data.SqlClient;
using System.Web.Script.Serialization;

public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        string connectionString = "Data Source=myServerAddress;Initial Catalog=myDataBase;Integrated Security=True";

        using (SqlConnection connection = new SqlConnection(connectionString))
        {
            connection.Open();

            string sql = "SELECT * FROM myTable";

            using (SqlCommand command = new SqlCommand(sql, connection))
            {
                using (SqlDataReader reader = command.ExecuteReader())
                {
                    JavaScriptSerializer serializer = new JavaScriptSerializer();
                    string json = serializer.Serialize(reader);

                    Response.Write(json);
                }
            }
        }
    }
}