class1.cs

.net三层结构的源码

using System;
using System.Collections.Generic;
using System.Text;
using IDal;
namespace AccessDal
{
    public class AccessDal : IDAL
    {
        #region IDAL 成员

        public System.Data.DataSet SelectSQL(string sql)
        {
            throw new Exception("The method or operation is not implemented.");
        }

        public bool ExcuteSQL(string sql)
        {
            throw new Exception("The method or operation is not implemented.");
        }

        #endregion
    }
}