【2017-6-2】Linq高级查

//默认使用这个表
using (Data0216DataContext con = new Data0216DataContext())
            {
                List<Users> ulist = con.Users.ToList();
                //开头
                //Repeater1.DataSource = ulist.Where(r => r.NickName.StartsWith("许"));

                //结尾
                //Repeater1.DataSource = ulist.Where(r => r.NickName.EndsWith("杰"));

                //包含，模糊差
                //Repeater1.DataSource = ulist.Where(r => r.NickName.Contains("1"));


                //Response.Write("总个数：" + ulist.Count + "</br>");


                //Response.Write("最大值：" + ulist.Max(r => Convert.ToDecimal(r.PassWord)) + "</br>");


                //Response.Write("最小值：" + ulist.Min(r => Convert.ToDecimal(r.PassWord)) + "</br>");


                //Response.Write("平均值：" + ulist.Average(r => Convert.ToDecimal(r.PassWord)) + "</br>");


                //Response.Write("求和：" + ulist.Sum(r => Convert.ToDecimal(r.PassWord)) + "</br>");

                //升序
                //Repeater1.DataSource = ulist.OrderBy(r => r.Ids);


                //降序
                //Repeater1.DataSource = ulist.OrderByDescending(r => r.Ids);
            }