ASP.NET

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Data;
using System.Data.Common;
using System.Data.SqlClient;


namespace Sample.App_Code.DataAccessLayer
{
    public class ItemDB
    {
        public static int Save(Item NewItem)
        {
            int result = 0;
            using (SqlConnection myConnection = new SqlConnection(AppConfiguration.ConnectionString))
            {
                SqlCommand myCommand = new SqlCommand("sprocInsertUpdateSingleItem", myConnection);
                myCommand??????????????????
            }
            return result;
        }
    }
}

using system.??????