Homework/Admin/ClassList.aspx.cs

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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 dbClass;

namespace Homework.Admin
{
    public partial class ClassList : System.Web.UI.Page
    {
        Alert alert = new Alert();
        SqlHelper data = new SqlHelper();
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {


                InitData();
            }
        }
        protected void InitData()
        {
            SqlHelper mydata = new SqlHelper();
            GridView1.DataSource = mydata.GetDataReader("select * from Class");
            GridView1.DataBind();
        }
        //GridView控件RowDeleting事件
        protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
        {
            SqlHelper mydata = new SqlHelper();

            string ID = GridView1.DataKeys[e.RowIndex].Values[0].ToString();
            try
            {
                mydata.RunSql("delete  from Class  where  id='" + ID + "'");


                Label4.Text = "删除成功！";
                GridView1.EditIndex = -1;
                InitData();
            }
            catch
            {


                Label4.Text = "删除失败！";
            }

        }
        //GridView控件RowUpdating事件
        protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e)
        {
            SqlHelper mydata = new SqlHelper();