数据库编程

开发平台：
Visual C++

answerList.aspx.cs：源码内容
							﻿using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
public partial class student_answerList : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        string userId = Session["userId"].ToString();
        //string userId = "63081500001";
        string teacherlists = "";
        SqlConnection connection = DB.connect_la();
        connection.Open();
        string commandString = "SELECT thesis_total FROM thesis WHERE stu_id= " + userId;
        SqlCommand cmd = new SqlCommand(commandString, connection);
        SqlDataReader sdr = cmd.ExecuteReader();
        if (sdr.Read())
            Label1.Text = sdr.GetValue(0).ToString();
        sdr.Close();
        commandString = "SELECT exam_stu_table.stu_name FROM exam_stu_table,stu_id_num where exam_stu_table.exam_id = stu_id_num.exam_id and stu_id_num.stu_id='" + userId+"'";
        SqlCommand cmd2 = new SqlCommand(commandString, connection);
        SqlDataReader sdr2 = cmd2.ExecuteReader();
        if (sdr2.Read())
            Label2.Text = sdr2.GetValue(0).ToString();
        sdr2.Close();
        commandString = "SELECT * FROM rep_to_arg where stu_id=" + userId;
        SqlCommand cmd3 = new SqlCommand(commandString, connection);
        SqlDataReader sdr3 = cmd3.ExecuteReader();
        if (sdr3.Read())
        {
            teacherlists = sdr3.GetValue(3).ToString();
            Label4.Text = sdr3.GetValue(1).ToString().Substring(0, 10);
            Label5.Text = sdr3.GetValue(1).ToString().Substring(10, 8);
            Label6.Text = sdr3.GetValue(2).ToString();
        }
        sdr3.Close();
        int beginIndex = 0;
        //提取答辩老师姓名
        for (int i = 0; (beginIndex + i) < teacherlists.Length; i++)
        {
            commandString = "SELECT tea_name FROM tea_table where tea_id=" + teacherlists.Substring(beginIndex, 8);
            SqlCommand cmd4 = new SqlCommand(commandString, connection);
            SqlDataReader sdr4 = cmd4.ExecuteReader();
            if (sdr4.Read())
            {
                if (0 == beginIndex)
                {
                    Label7.Text = sdr4.GetValue(0).ToString();
                }
                else
                {
                    Label7.Text += ", ";
                    Label7.Text += sdr4.GetValue(0).ToString();
                }
            }
            sdr4.Close();
            beginIndex += 9;
        }
        commandString = "SELECT tea_table.tea_name FROM tea_table,stu_tea where tea_table.tea_id = stu_tea.tea_id and stu_tea.sut_id = " + userId;
        SqlCommand cmd7 = new SqlCommand(commandString, connection);
        SqlDataReader sdr7 = cmd7.ExecuteReader();
        if (sdr7.Read())
        {
            Label3.Text = sdr7.GetValue(0).ToString();
        }
        sdr7.Close();
        connection.Close();
    }
    
}

						