Backup/WEB/TeacherShow.aspx.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using BLL;
using Model;
namespace WEB
{
    public partial class TeacherShow : System.Web.UI.Page
    {
        private GradeBll gradeBll = new GradeBll();
        private StuBll stuBll = new StuBll();
        private TeacherBll teacherBll = new TeacherBll();

        protected void Page_Load(object sender, EventArgs e)
        {
            if (!this.IsPostBack)
            {
                if (Request.QueryString["teaId"] != null)
                {
                    TeacherLinq();
                }
                TeacherLinqToSQL();
            }
        }

        /// <summary>
        /// 根据Id查询所有教师信息
        /// </summary>
        void TeacherLinq()
        {
            if (Cache["teaId"] != null)
            {
                List<StuInfo> stuInfo = stuBll.GetStuInfo();
                List<Grade> grade = gradeBll.GetGrade();
                List<Teacher> teacher = teacherBll.GetTeacherInfo();
                int teaId = int.Parse(Request.QueryString["teaId"]);
                var result = from t in teacher
                             join g in grade on t.teaId equals g.gSubject
                             join i in stuInfo on g.stuId equals i.stuId
                             where t.teaId == teaId
                             select new
                             {
                                 t.teaId,
                                 t.teaName,
                                 t.teaPwd,
                                 t.teaSubject,
                                 g.gScore,
                                 i.stuName,

                             };
                this.RtList.DataSource = result;
                RtList.DataBind();
            }
        }
        /// <summary>
        /// 直接查询所有教师信息
        /// </summary>