courceinfo.aspx.cs

学生网上选课系统,实现了学生的在线选课和教师课程的上传

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 _Default : System.Web.UI.Page
{
    SqlConnection conn;
    protected void Page_Load(object sender, EventArgs e)
    {
        string myconn=System .Configuration .ConfigurationManager .AppSettings ["ConnectionString"];
        conn = new SqlConnection(myconn );
        if (Session["userName"] == null)
        {
            Response.Redirect("Login.aspx");
        }

        if (!this.IsPostBack)
        {
            
            CourceDetailsShow();
        }
    }
   
    private void CourceDetailsShow()
    {
       
        string SqlStr = "SELECT Cource.*,Teacher.*,type.*,depart.* from Cource,Teacher,type,depart where Cource.teaID=Teacher.teaID and Cource.typeID=type.typeID and Cource.departid=depart.departid and Cource.courceID='" + Request["courceID"].ToString() + "' and Cource.teaID='" + Request["teaID"].ToString() + "'";
        

        try
        {
            if (conn.State.ToString() == "Closed")          //连接如果关闭，打开
                conn.Open();
            SqlCommand cmd = new SqlCommand(SqlStr, conn);
            SqlDataReader sdr = cmd.ExecuteReader();
            if (sdr.Read())
            {
                courcename.Text = sdr["courceName"].ToString();
                courcedepart.Text = sdr["departName"].ToString();
                courcerenshu.Text = sdr["courcerenshu"].ToString();
                credit.Text = sdr["credit"].ToString();
                courcetype.Text = sdr["typename"].ToString();
                txtcourceinfo.Text = sdr["courceinfo"].ToString();
                teaname.Text = sdr["teaname"].ToString();
                teasex.Text = sdr["teasex"].ToString();
                teazc.Text = sdr["teazc"].ToString();
                teadepart.Text = sdr["departname"].ToString();
                teaphone.Text = sdr["teaphone"].ToString();
                teaaddress.Text = sdr["teaaddress"].ToString();
                txtteainfo.Text = sdr["tearemark"].ToString();
            }
            else
            {
                Response.Write("数据库错误，没查询到该门课程！");
                Response.End();
            }
        }
        catch (Exception ex)                                //异常处理
        {
            Response.Write("数据库错误，错误原因：" + ex.Message);
            Response.End();
        }
        finally
        {
            if (conn.State.ToString() == "Open")            //如果连接打开，关闭
                conn.Close();
        }
    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        Response.Redirect("xuesheng2.aspx");
    }
}