查询大数据表的效率对比：Linq to SQL、Entity Framework、企业(2)

            {
                DataClasses1DataContext dc = new DataClasses1DataContext();
               
                //IEnumerable<School> schs = dc.ExecuteQuery<School>("Select * from School");
                //System.Data.Linq.Table<School> schools = dc.Schools;
                List<School> schools = dc.Schools.ToList();
                int count = 0;
                foreach (School sc in schools)
                {
                    count++;
                }
                //List<School> schs = schools.ToList();
                Response.Write("<br>Linq to SQL 查询 记录数：" + schools.Count().ToString());

            }

            sw3.Stop();
            Response.Write("<br>Linq to SQL 查询 Milliseconds：<font color='#FF0000'>" + sw3.ElapsedMilliseconds+"</font>");  
           
            Stopwatch sw2 = new Stopwatch();
            sw2.Start();
            DataSet dr = new DataSet();
            for (int i = 0; i < repeatTimes; i++)
            {
                 dr = selectView();
            }
            Response.Write("<br>视图查询 记录数：" + dr.Tables[0].Rows.Count);

            sw2.Stop();