stu_course.aspx.cs

教务管理系统

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 studentdetail : System.Web.UI.Page
{
    SqlConnection connections;
    string strsql;
    public void Bindgrid()
    {       
        string strsql0 = "select * from tabstu_cour,tabcour where tabstu_cour.Crid=tabcour.Crid and Sid='" + Session["User_id"].ToString() + "'";
        SqlDataAdapter sqlda = new SqlDataAdapter(strsql0, connections);
        DataSet datas = new DataSet();
        sqlda.Fill(datas);
        DataGrid1.DataSource = datas;
        DataGrid1.DataBind();
    }

    protected void Page_Load(object sender, EventArgs e)
    {
        if (Session["user_id"] == null)
        {
            Response.Redirect("default.aspx");
        }
        this.Title = "浏览已选课程";
        lbtnCourse_info.Enabled = false;
        string connsql = System.Configuration.ConfigurationManager.AppSettings["connstring"];        
        connections = new SqlConnection(connsql);
        if (!IsPostBack)
        {
            Bindgrid();
        }        
    }

    protected void lbtnQuit_Click(object sender, EventArgs e)
    {
        Session.Clear();
        Response.Redirect("Default.aspx");
    }

    
    protected void Datagrid_course_SelectedIndexChanged(object sender, EventArgs e)
    {

    }

    public void DataGrid_Page(object sender, DataGridPageChangedEventArgs e)
    {
        DataGrid1.CurrentPageIndex = e.NewPageIndex;
        Bindgrid();
    }

    protected void btnSearch_Click(object sender, EventArgs e)
    {
        DataGrid1.CurrentPageIndex = 0;
        if (dropType.Text == "课程名称")
        {
            strsql = "select * from tabcour,tabstu_cour  where  tabcour.Crname='" + txtKeyword.Text + "'" + "and tabstu_cour.Crid=tabcour.Crid";
            //string strsql0 = "select * from tabstu_cour,tabcour where tabstu_cour.Crid=tabcour.Crid and Sid='" + Session["User_id"].ToString() + "'";
        }
        else
        { 
            //strsql = "select * from tabcour  where Crid='" +  txtKeyword.Text + "'";
            strsql = "select * from tabcour,tabstu_cour  where  tabcour.Crid='" + txtKeyword.Text + "'" + "and tabstu_cour.Crid=tabcour.Crid";
        }
        
        SqlDataAdapter sqlda = new SqlDataAdapter(strsql, connections);
        DataSet datas = new DataSet();
        sqlda.Fill(datas);
        DataGrid1.DataSource = datas;
        DataGrid1.DataBind();
        if (DataGrid1.Items.Count == 0)
        {
            Response.Write("<script language=javascript>alert('未找到指定课程！');</script>");
            return;
        }       
    }
    protected void btnDisplayAll_Click(object sender, EventArgs e)
    {
        Bindgrid();
    }
    
    protected void lbtnStuInfo_Click(object sender, EventArgs e)
    {
        Response.Redirect("stu_info.aspx");
    }
    protected void lbtnRepwd_Click(object sender, EventArgs e)
    {
        Response.Redirect("repassword.aspx");

    }
    protected void lbtnCourse_info_Click(object sender, EventArgs e)
    {
        Response.Redirect("stu_course.aspx");
    }
    protected void lbtnChoose_Click(object sender, EventArgs e)
    {
        Response.Redirect("choosecourse.aspx");
    }
    protected void lbtnGrade_Click(object sender, EventArgs e)
    {
        Response.Redirect("stu_grade.aspx");
    }
    
}