数据库编程

开发平台：
Visual C++

index.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_index : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        string userId = Session["userId"].ToString();
        //string userId = "63091500002";
        //论文查询
        string keyan = Label1.Text.ToString().Trim();
        string qiye = Label2.Text.ToString().Trim();
        string xuanbao = Label3.Text.ToString().Trim();
        string kaiti = Label4.Text.ToString().Trim();
        string lunwen = Label5.Text.ToString().Trim();
        
        SqlConnection connection = DB.connect_la();
        connection.Open();
        string commandString = "SELECT * FROM thsis_data WHERE stu_id= " + userId;
        SqlCommand cmd = new SqlCommand(commandString, connection);
        SqlDataReader sdr = cmd.ExecuteReader();
        string thesis_exist = "未提交";
        if (sdr.Read())
        {
            Label1.Text = sdr.GetValue(3).ToString();
            if (Label1.Text.Trim() == "未提交")
            {
                HyperLink1.NavigateUrl = "../document/科研实践能力考核表.doc";
            }
            else if(Label1.Text.Trim() == "已提交")
            {
                HyperLink1.NavigateUrl = "../document/" + userId + "/科研实践能力考核表.doc";
            }
            Label2.Text = sdr.GetValue(4).ToString();
            if (Label2.Text.Trim() == "未提交")
            {
                HyperLink2.NavigateUrl = "../document/企业导师表.doc";
            }
            else if (Label2.Text.Trim() == "已提交")
            {
                HyperLink2.NavigateUrl = "../document/" + userId + "/企业导师表.doc";
            }
            Label3.Text = sdr.GetValue(2).ToString();
            if (Label3.Text.Trim() == "未提交")
            {
                HyperLink3.NavigateUrl = "../document/选报导师表.doc";
            }
            else if (Label3.Text.Trim() == "已提交")
            {
                HyperLink3.NavigateUrl = "../document/" + userId + "/选报导师表.doc";
            }
            Label4.Text = sdr.GetValue(1).ToString();
            if (Label4.Text.Trim() == "未提交")
            {
                HyperLink4.NavigateUrl = "../document/开题报告.doc";
            }
            else if (Label4.Text.Trim() == "已提交")
            {
                HyperLink4.NavigateUrl = "../document/" + userId + "/开题报告.doc";
            }
            thesis_exist = sdr.GetValue(5).ToString();
        }
        sdr.Close();
        commandString = "SELECT thesis_state,thesis_total FROM thesis where stu_id=" + userId;
        SqlCommand cmd2 = new SqlCommand(commandString, connection);
        SqlDataReader sdr2 = cmd2.ExecuteReader();
        if (sdr2.Read())
        {
            Label5.Text = sdr2.GetValue(0).ToString();
            string thesis_title = sdr2.GetValue(1).ToString();
            if (thesis_exist.Trim() == "未提交")
            {
                HyperLink5.NavigateUrl = "../document/关于Java的生存现状之分析.doc";
            }
            else if (thesis_exist.Trim() == "已提交")
            {
                HyperLink5.NavigateUrl = "../document/" + userId + "/"+thesis_title+".doc";
            }
        }
        sdr2.Close();
        connection.Close();
    }
}

						