studentgx.aspx.cs

小型物理试验管理系统Management system for small-scale physical experiments

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 StudentGX : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        Label1.Text = Session["uid"] + "";
        GridViewBind();
    }
    
    private void GridViewBind()
    {
        string myConnectionString = "server=localhost;uid=sa;pwd=;database = WXJ;";
        SqlConnection myConnection = new SqlConnection();
        myConnection.ConnectionString = myConnectionString;
        string cmdString = "select enumber,ename,edate,eaddress,echarger,total,selected from xuanke where snumber='" + Session["number"] + "' order by enumber";
        SqlDataAdapter myAdapter = new SqlDataAdapter(cmdString, myConnection);
        myConnection.Open();
        DataSet mySet = new DataSet();
        myAdapter.Fill(mySet);
        myGridView.DataSource = mySet;
        myGridView.DataBind();
        myConnection.Close();
    }
    protected void myGridView_RowDeleted(object sender, GridViewDeletedEventArgs e)
    {
 
    }
    protected void myGridView_RowDeleting(object sender, GridViewDeleteEventArgs e)
    {

    }
    protected void ImageButton1_Click(object sender, ImageClickEventArgs e)
    {
        
    }
    protected void myGridView_DataBinding(object sender, EventArgs e)
    {

    }
    protected void myGridView_RowDataBound(object sender, GridViewRowEventArgs e)
    {

    }
    protected void myGridView_SelectedIndexChanged(object sender, EventArgs e)
    {
       int row = myGridView.SelectedIndex;
       string g1 = myGridView.Rows[row].Cells[0].Text;//实验号
       string g7 = myGridView.Rows[row].Cells[6].Text;//已选人数
       int ii = Convert.ToInt32(g7);
       string number = Convert.ToString(Session["number"]);

       SqlConnection myconnection = new SqlConnection(ConfigurationManager.AppSettings["ConnectionString"]);
       DBConnection conn = new DBConnection();
       string sql = "delete from xuanke where snumber='" + number + "'and enumber='" + g1 + "'";
       SqlDataReader recm = conn.ExecuteReader(sql);
       Label2.Text = "退选成功!";

       ii--;
       recm.Close();
       sql = "update shiyan set selected='" + ii + "'where enumber ='" + g1 + "'";
       SqlDataReader rs1 = conn.ExecuteReader(sql);
       rs1.Close();
       sql = "update xuanke set selected='" + ii + "'where enumber ='" + g1 + "'";
       SqlDataReader rs2 = conn.ExecuteReader(sql);
       GridViewBind();
        
    }
}