default5.aspx.cs

学生管理系统 功能不是很强大 但是很实用

using System;
using System.Data;
using System.Data.SqlClient;
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;

public partial class Default5 : System.Web.UI.Page
{
    string student;
    protected void Page_Load(object sender, EventArgs e)
    {
        student = this.Session["name"].ToString();
        if (DropDownList1.Text == "")
        {
            string myConnstr = "data source=localhost;database=学生成绩智能管理系统;user id=sa;password=sa;";
            SqlConnection myConn = new SqlConnection(myConnstr);
            string sql = "select 课程名 from 课程表 ";
            myConn.Open();
            SqlCommand myComm = new SqlCommand(sql, myConn);
            SqlDataReader myDataReader = myComm.ExecuteReader();
            while (myDataReader.Read())
                this.DropDownList1.Items.Add(myDataReader.GetValue(0).ToString());
            myConn.Close();
        }
    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        string myConnstr = "data source=localhost;database=学生成绩智能管理系统;user id=sa;password=sa;";
        SqlConnection myConn = new SqlConnection(myConnstr);
        string sql = "select 教师表.教师编号,教师表.姓名,教师表.性别,教师表.出生日期,教师表.院系名称,教师表.职称,教师表.学历,教师表.备注,教师表.政治面貌 from 教师表,成绩表,课程表 where 课程表.课程名='" + DropDownList1.Text + "' and 课程表.课程号=成绩表.课程号 and 成绩表.任课教师编号=教师表.教师编号";
        myConn.Open();
        SqlCommand myComm = new SqlCommand(sql, myConn);
        SqlDataReader myDataReader = myComm.ExecuteReader();
        if (myDataReader.Read())
        {
            TextBox1.Text = myDataReader.GetValue(0).ToString();
            TextBox2.Text = myDataReader.GetValue(1).ToString();
            TextBox3.Text = myDataReader.GetValue(2).ToString();
            TextBox4.Text = myDataReader.GetValue(3).ToString();
            TextBox5.Text = myDataReader.GetValue(4).ToString();
            TextBox6.Text = myDataReader.GetValue(5).ToString();
            TextBox7.Text = myDataReader.GetValue(6).ToString();
            TextBox9.Text = myDataReader.GetValue(7).ToString();
            TextBox8.Text = myDataReader.GetValue(8).ToString();
        }
        myConn.Close();
    }
    protected void LinkButton1_Click(object sender, EventArgs e)
    {
        this.Response.Redirect("登陆页面.aspx");
    }
}